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223 Cards in this Set
- Front
- Back
What is a characteristic of living things that sets them apart from the nonliving?
|
- respond to a stimulus
- grow and reproduce - adaptation to a way of life |
|
_____ is the study of life, using the scientific method.
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- Biology
|
|
Choose the highest level of organization
|
- organ systems
|
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What human organ system is responsible for exchanging gases with the outside environment?
|
- respiratory system
|
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Choose the correct statement about how humans fit in with the rest of nature.
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- Humans are part of the evolutionary process
- Humans depend on the environment for many services - Humans are a part of the biosphere |
|
What part of human existence makes us think we are separate from nature?
|
- our cultural heritage
|
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In what ways do humans threaten the biosphere and damage ecosystems?
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- human activities reduce biodiversity
- humans clear forests for farmland - humans tend to alter ecosystems |
|
A _________ is a scientific theory that is accepted as valid by an overwhelming number of scientists
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- principle
|
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Organisms within communities and ecosystems feed on one another to obtain energy and nutrients. What component does not cycle within an ecosystem?
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- energy
|
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Koch's postulates are used in order to show:
|
- that a pathogen causes a particular disease
|
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The _______ theory declares that all organisms contain coded information that dictates their form, function, and behavior
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- gene
|
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Information from scientific journals is more highly regarded than information from other sources because:
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- the material has gone through a review process
- the author is usually the investigator who did the research |
|
Which of the following would be a URL ending for a website that you would be least likely to trust for scientific information?
|
- .com
|
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Which of the following tells us how uncertain a particular value is in a report of a scientific study?
|
- standard error
|
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Which of the following is not a component of a statistical study?
|
- experimentation
|
|
A keystone species is one:
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- whose extinction will have an effect throughout a community
|
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Polar bears are vulnerable to extinction because of:
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- chemical pollution
- global warming - oil and gas exploration |
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A practice that involves the storage of embryos, sperm and eggs at a very low temperature is called:
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- cryopreservation
|
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The process that transforms solar energy into chemical energy in the bonds of organic molecules is called _____.
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- photosynthesis
|
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Homeostasis is _____.
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- the maintenance of internal conditions within certain limits
|
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As biological organization increases in complexity in living systems, new _________ are determined with unique characteristics governed by chemical and physical interactions.
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- emergent properties
|
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The correct way to write the scientific name of the garden pea is _____.
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- Pisum sativum
|
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All the organisms classified into the Domain ______ are _________.
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- archaea; single celled
|
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The theory that accounts for the differences that divide and the unity that joins all living things is the _____ theory.
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- evolution
|
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The great diversity of life forms is the result of _____.
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- adaptations to different environments
- descent from a common ancestor |
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Which of the given statements is NOT true?
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- The role of evolution does not help support the meaning of life's diversity.
|
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Which of the following statements best represent the role of mutations in natural selection:
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- Mutations fuel natural selection through the introduction of variable genes capable of being passed to new generations through reproduction.
|
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The great pattern of organization in nature is maintained by _______.
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- flow of energy from the sun
|
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Negative impacts on the biodiversity of healthy ecosystems have included ALL of the following activities EXCEPT:
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- An increase in the size and volume of barrier reefs
|
|
he cycling of nutrients through ecosystems depends on _____.
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- photosynthesis
- respiration - decomposition of organisms after they die |
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The first step in the scientific method is _____.
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- make observations and consider previous data
|
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When a person combines isolated facts and creative thinking to arrive at an explanation for something, he/she used _____ reasoning.
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- inductive
|
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Its freezing winter and you step outside on the porch to get your newspaper without a coat. You begin to shiver and get "goose bumps". When you go back in, you take your temperature and it is still at the base level of 98.6F/37C. That your body temperature is maintained within a narrow range despite changes in temperature is due to the body's ability to use _______________.
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- homeostasis
|
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Which of the following elements is NOT one of the six that make up 98% of most organisms' body weight?
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- iron
|
|
Which of the following statements is true?
|
- All isotopes have the same number of protons
|
|
What type of bond is formed when atoms share electrons?
|
- covalent
|
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Which of the following has a basic pH?
|
- milk of magnesia
|
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Aquatic living things are able to survive the winter thanks to which property of water?
|
- It is less dense as a solid than as a liquid.
|
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The combined number of ___________ will determine the number of electrons in orbital(s) around a neutral atom.
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- protons
|
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Which bond is most easily broken?
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- a hydrogen bond
|
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Which of the following statements is true?
|
- There are two polar covalent bonds in water.
|
|
Which of the following atomic numbers indicates the element with the highest valence number?
|
- 10
|
|
Normal rainfall has a pH of___________.
|
- 5.6
|
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If a patient is injected with radioactive iodine, a radioisotope scan would show it appear in the ___________.
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- thyroid
|
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Hydrophobic molecules tend to be _________.
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- nonpolar
|
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The two parallel strands of DNA are held together by _______ bonds.
|
- hydrogen
|
|
The calcium ion (Ca2+) _____.
|
- has given away two electrons
|
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A pH of 5 is __________ times as acidic as a pH of 9.
|
- 10,000
|
|
Hydrogen bonds form when ___________.
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- a slightly negative atom is attracted to a slightly positive atom
|
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The only atom that has a nucleus with no neutrons is _________.
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- hydrogen
|
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As the result of the work of ___________ the idea of spontaneous generation was dismissed.
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- Louis Pasteur
|
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Choose the CORRECT statement concerning cell surface/volume ratios.
|
- As the volume increases/relative surface area decreases.
- Volume reflects metabolic needs. - Surface area reflects ability to exchange materials. |
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Paleontologists have discovered ancient bacteria fossils dated at over 3.5 billion years old. These fossils resemble bacteria that are capable of living in extreme conditions such as high temperature and salinity. It is thought that these bacteria belonging to the domain _____________ gave rise to domain Eukarya.
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- Archaea
|
|
Why is cell division important as related to the size of cells?
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- Cell division restores the amount of surface area needed for exchange requirements.
|
|
Brett is having difficulty distinguishing fine detail on his tissue specimen. He is having problems with the _________ of his microscope.
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- resolving power
|
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___________ is a genetic disorder that is related to lysosomal disfunction.
|
- Tay-sachs Disease
|
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Brad placed a water plant called Elodea in some distilled water. What happened in the cells of the plant?
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- The cells burst
|
|
The ___________ is a structure found in eukaryotic cells that houses the genetic material
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- nucleus
|
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________ are the fundamental units that make up all living things.
|
- Cells
|
|
The light microscope has a resolving power of:
|
- 0.0002 mm
|
|
Choose the statement that best describes the cell theory.
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- All living things are made of cells and cells come only from pre-existing cells
|
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The phospholipid bilayer that surrounds/maintains the integrity of a cell is called a:
|
- plasma membrane
|
|
During a hurricane, salt water invades fresh water marshes causing many of the plants to die and ultimately the loss of soil. The plants are killed because the salt water solution is __________________ to the plants drawing water from their cells.
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- hypertonic
|
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Which one of the following is not part of the cytoskeleton?
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- microbodies
|
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The internal structures of a cell that maintain its shape and allow it to move are called:
|
- cytoskeleton
|
|
The sum of all of the chemical reactions that occur in a cell collectively are called:
|
- metabolism
|
|
The function of the plasma membrane is:
|
- determines which substances enter and leave the cell
- serves as a boundary between the cell and its environment - contains receptor sites which determine how the cell interacts with its environment |
|
Anaerobic respiration such as lactic acid fermentation and alcoholic fermentation end up forming _______________ molecules of ATP and aerobic respiration produces a total of ________________ ATP molecules.
|
- 4, 36
|
|
The contemporary description of the membrane structure of a cell is known as the _____________.
|
- fluid-mosaic model
|
|
In order for certain molecules including medications to enter the plasma membrane, several variables can influence their diffusion across the membrane. These variables may include the following:
|
- pressure
- solubility in water - temperature - concentration |
|
Recently Tom was diagnosed with Type 2 diabetes. Although he understood the consequences of the disorder, he was intrigued to find out that at the molecular level _________________ was responsible for the medical problem.
|
- facilitated transport
|
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The assisted transport of a molecule across the cell membrane without an expenditure of energy is known as ______.
|
- facilitated transport
|
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The _______ is a stack of slightly curved saccules that are important in packaging and secretion.
|
- Golgi apparatus
|
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Choose the CORRECT statement about solute concentrations or particles inside and outside the cell.
|
- In an isotonic solution the number of particles is equal.
|
|
An obvious dark-stained structure within the nucleus that contains ribosomal RNA is called the
|
- nucleolus
|
|
Carolyn was diagnosed with ovarian cancer. Further testing yielded that she only had one functional copy of the ______ gene.
|
- CFTR
|
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In developing embryos such as a chick, _________ restores the amount of surface area needed for exchange requirements.
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- cell division
|
|
Brad placed a water plant called Elodea in some distilled water. What happened in the cells of the plant?
|
- The cells did not change
|
|
The reason that cells stay small is most accurately stated as:
|
- cells influence nearby cells to divide
|
|
Through stem cell research it may soon be possible to treat patients with Parkinson's disease with L-DOPA which is converted into ____________________.
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- Glucose
|
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The __________ provides a three-dimensional view of the surface of an object.
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- scanning electron microscope
|
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f a cell has a volume of 3nm, what are the surface area and the volume of the cell?
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- 54nm^2, 27nm^3
|
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MELAS is a recently described disorder that is related to improper energy relationships within cells. Which structure organelle may be faulty?
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- Mitochondria
|
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If a cell lacked ribosomes, it would not be able to:
|
- synthesize proteins
|
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The rough endoplasmic reticulum is important in the synthesis of _______ and the smooth endoplasmic reticulum is important in synthesizing _______.
|
- proteins, phospholipids
|
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Organic non-protein molecules which assist the activity of an enzyme are called:
|
- coenzymes
|
|
Basal bodies are associated with:
|
- cilia and flagella
|
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When the cell cycle has lost control, a ___________ may result.
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- tumor
|
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The primary function of the mitotic spindle is to:
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- move sister chromatids to opposite poles.
|
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The second meiotic division is essentially mitosis, except that the resultant cells in which this division occurs are:
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- haploid
|
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During the majority of a cell's life, it is in _________ that was once called the resting stage. However, today it is the interval of time between cell divisions.
|
- interphase
|
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During ____________ of the cell cycle, typically the nucleolus disappears.
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- prophase
|
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Perhaps the legend of pixies can be associated with _____ syndrome.
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- William's
|
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Meiosis is very important for the production of gametes in order to:
|
- provide for genetic variation
- stabilize the number of chromosomes passed through the generations - produce gametes with the haploid number of chromosomes - ensure the proper number of chromosomes exist after fertilization |
|
The inactive X chromosome is distinguishable by the presence of a ___________.
|
- Barr body
|
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In 2004 the Individuals with Disabilities Education Act (IDEA) was initiated and required public schools to develop:
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- an Individualized Education Plan (IEP) for all qualifying disabled children
|
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In a non-dividing cell, the nucleus contains indistinct and diffuse chromatin, but in a dividing cell, these become short and thick and are called:
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- chromosomes
|
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During ________ the chromosomes line up along the equatorial plane
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- metaphase
|
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During the process of meiosis I the __________ pair up in synapsis.
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- homologous chromosomes
|
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A ______ is a group of symptoms that always occur together.
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- syndrome
|
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The process of mitosis is comprised of four stages. Which statement correctly places the stages in order?
|
- prophase, metaphase, anaphase, telophase
|
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Tom has Klinefelter syndrome. An analysis of his chromosomes yielded:
|
- the presence of one Barr body
|
|
Which statement is false?
|
- During gap 2 (G2) of interphase, the nucleus begins to disintegrate.
|
|
Danielle was debating whether to have amniocentesis or chorionic villi sampling. Dr. Ferguson explained that the advantages of CVS include that:
|
- it can be performed sooner in the pregnancy than amniocentesis and the results from karyotyping can be read at an earlier date
|
|
James and Jennifer were fraternal twins, this meant that they:
|
- were the product of two eggs and two sperm.
|
|
Two daughter nuclei are formed from each parent cell during:
|
- telophase
|
|
Which statement is false concerning prophase?
|
- during prophase the DNA is replicated
|
|
Daughter nuclei form from each parent cell during:
|
- telophase I and telophase II
|
|
Nancy was always a tall girl but she also had menstrual irregularities, early onset menopause, and learning disabilities. It is possible that she has:
|
- poly-X
|
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The secondary oocyte begins meiosis II but stops at metaphase II and does not complete metaphase II unless:
|
- the fertilization process begins
|
|
One of the genes involved in Down syndrome is the Gart gene which causes an increase in purines in the blood, resulting in
|
- leukemia
|
|
Which of the following is a true statement about Trisomy 21?
|
- is more likely to occur in children of older women
|
|
What is the function of valves in the veins?
|
- prevent the backward flow of blood
|
|
When dissecting a specimen, Barry noticed that the arteries are thicker and more elastic than the veins. Why are the arteries different from the veins?
|
- Arteries are under greater pressure
|
|
The cardiologist informed Mr. Kirk that he had an enlarged P wave as the result of bicuspid (mitral) valve stenosis. The P wave indicates that the atria;
|
- are about to contract
|
|
Choose the correct statement regarding the anatomical features of the heart.
|
- The only function of heart valves is to prevent backflow.
|
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Walking down the dark road after watching a scary movie caused Tina's heart to race. The _________ nervous system can cause the heart to beat fast.
|
- sympathetic
|
|
The two lower pumping chambers of the heart are known as the _____.
|
- ventricles
|
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What structure within a capillary bed shunts blood from the arteriole to the venule?
|
- precapillary sphincter
|
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An instrument that is used to measure blood pressure is known as a/an ___.
|
- sphygmomanometer
|
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The alternating expansion and recoiling of an arterial wall can be felt as ______
|
- a pulse
|
|
A stent is:
|
- a cylinder of expandable metal mesh that is positioned inside a coronary artery
|
|
Blood pressure ______ with distance from the left ventricle.
|
- decreases
|
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Choose the most correct statement concerning capillaries.
|
- The only site of nutrient, gas exchange, and waste exchange is the capillaries.
|
|
Which of the following blood vessels are the only ones small, thin, and porous enough to exchange substances at the tissue level of organization?
|
- capillaries
|
|
The ______ is a thick, membranous sac that surrounds and protects the heart.
|
- pericardium
|
|
Which structure initiates the normal contraction impulse in the heart and is known as the pacemaker?
|
- SA node
|
|
The ____________ are known as the "strings of the heart".
|
- chordae tendinae
|
|
Difficulties in adult heart transplants include:
|
- hearts are not readily available and immune rejection
|
|
The coronary arteries:
|
- tend to become clogged
- serve to provide blood to the heart - lie on the exterior surface of the heart - have a small diameter |
|
The largest artery in the systemic circuit is the ______.
|
- aorta
|
|
Mrs. Hinson was informed that her blood pressure was 150/95. These numbers indicate that she has __________.
|
- stage 1 hypertension
|
|
The _____ system drains blood from the capillary beds of the digestive tract to a capillary bed in the liver.
|
- hepatic portal
|
|
The lymphatic system serves to _________.
|
- take up excess tissue fluid and return it to the bloodstream
- help defend the body against disease - absorb fats in the intestinal villi and transport them to the bloodstream |
|
When does atherosclerosis usually begin?
|
- in early childhood
|
|
Mr. Everett suffered from a thrombus. If the thrombus dislodges and enters the bloodstream it becomes a/an ___.
|
- embolus
|
|
Mr. Thompson is suffering from pain and pressure in the chest and left arm, neck, jaw, and shoulder. These could be symptoms of ___________.
|
- angina pectoris
|
|
__________ give rise to the components of the blood.
|
- Multipotent stem cells
|
|
________ and ________ are agranular leukocytes.
|
- Lymphocytes and monocytes
|
|
om's allergies were so bad that he went to his physician. Upon analysis of his leukocyte count, his ____ and _____ levels were above normal.
|
- Eosinophil, basophil
|
|
Which of the following are actually cell fragments and not whole cells?
|
- platelets
|
|
In your body, approximately 2 million erythrocytes are produced per _____.
|
- second
|
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Pregnant women should have a diet high in ____ in order to reduce the chance for anemia and birth defects in the newborn.
|
- Folic acid
|
|
The vitamin necessary for fibrinogen and prothrombin formation (found in green vegetables and released by intestinal bacteria) is:
|
- Vitamin K
|
|
Hemoglobin that carries carbon dioxide is called _______.
|
- carbaminohemoglobin
|
|
Occasionally a patient suffers from traumatic blood loss. It is likely that the patient is suffering from ______ anemia.
|
- hemorrhagic
|
|
Cytotoxic T cells have the ability to:
|
- physically destroy pathogens
|
|
When Jennifer had to receive a gamma globulin shot after being exposed to hepatitis, the gamma globulins were serving as _____.
|
- antibodies
|
|
Granny complained that she has "iron-poor" blood and her low hematocrit confirmed her self-diagnosis. As a result of her condition, the ability of her erythrocytes to carry _____ was reduced.
|
- oxygen
|
|
Hemoglobin is:
|
- found in red blood cells
- an oxygen transporter - the pigment that makes blood red - required for cellular respiration |
|
Aged red blood cells are destroyed in the:
|
- spleen and liver
|
|
B lymphocytes are associated with ________.
|
- antibody production
|
|
Jennifer possesses type O blood and is considered:
|
- the universal donor
|
|
The two major components of blood are:
|
- formed elements and plasma
|
|
Mark suffers from nosebleeds and gastrointestinal bleeding due to increased breakdown of platelets outside the marrow. This is called:
|
- thrombocytopenia
|
|
The major function(s) of the blood include/includes ______.
|
- carrying waste products
- regulating body temperatures and pH - fighting pathogens - transporting oxygen, hormones, and nutrients |
|
The hormone __________ produced in the kidneys stimulates production of red blood cells.
|
- erythropoietin
|
|
The following are very important in the formation of healthy erythrocytes.
|
- Iron
- Vitamin B12 - Folic acid |
|
_____ involves the rupturing of erythrocytes.
|
- Hemolysis
|
|
Beth's grandmother lost her second child to hemolytic disease of the newborn. However, _______ was developed during her child bearing years and her third and fourth pregnancies were normal.
|
- Rho Gam
|
|
The final reaction in blood clotting is:
|
- fibrinogen → fibrin
|
|
Choose the correct response concerning the ABO blood typing transfusions.
|
- Host antibodies to donor antigens cause agglutination.
- Donors' foreign antigens may cause severe reactions. - It is possible to have more than one RBC antigen. - Hosts have antibodies only to antigens they lack. |
|
The pH of Karl's blood was 7.6. The normal ph of blood is about 7.4. As a result, he was suffering from _____.
|
- alkalosis
|
|
Dr. Childers became enraged when Shannon asked if he could receive erythropoietin to improve his cyclist edge. Using this substance would increase Shannon's chances for ______________.
|
- heart failure
|
|
Robby could not produce the enzyme adenosine deaminase. As a result, he suffered from ____.
|
- SCID
|
|
Monocytes are large lymphocytes that differentiate into _____.
|
- macrophages
|
|
______________ saved many lives by developing a means to type blood.
|
- Karl Landsteiner
|
|
The production of leukocytes is regulated by _____.
|
- colony-stimulating factor
|
|
Robby has type B positive blood, thus he will possess:
|
- B antigens, antibody A, Rh antigen
|
|
Dr. Nelson explained to Jena and Seth that there was a danger of hemolytic disease of the newborn. This occurs when:
|
- the mother is Rh negative, the father is Rh positive, and the baby is Rh positive
|
|
The most abundant type of white blood cells that are also the first to respond to an infection are __________. These leukocytes are also polymorphonucleated.
|
- neutrophils
|
|
Ray is always getting calls to donate blood because he has very rare _____ blood.
|
- AB negative
|
|
Which of the following is not a characteristic of infectious mononucleosis?
|
- there is uncontrolled white blood cell proliferation
|
|
_______ are the most abundant plasma proteins and contribute by establishing the osmotic pressure of the plasma.
|
- Albumens
|
|
The dentist explained that dental caries or cavities were caused by:
|
- bacteria within the mouth metabolizing sugar
- bacteria within the mouth metabolizing proteins - bacteria within the mouth metabolizing sugar - yeast within the mouth metabolizing fatty acids |
|
Karla noticed that an infant in the hospital had a cleft palate. She read that the bones of the _______ did not fuse during development.
|
- hard palate
|
|
The fleshy extension of the soft palate is known as the:
|
- uvula
|
|
An infant has ______ deciduous teeth and an adult has __ permanent teeth.
|
- 20, 32
|
|
The small lymphatic capillaries that reside in the small intestines and absorb fats are known as ________.
|
- lacteals
|
|
The "ball" of food that is swallowed and moved through the esophagus is called the _________.
|
- bolus
|
|
An outbreak of hepatitis A recently occurred in a small town. It was probably caused by
|
- contaminated water.
|
|
The layers of the gastrointestinal tract wall from the inside layer outward in order are:
|
- mucosa, submucosa, muscularis, serosa
|
|
The primary function of the stomach is:
|
- to store food, churn, begin digestion
|
|
The process of mechanical digestion includes:
|
- physically making food smaller and easier to handle
|
|
What is the major function of the colon?
|
- form feces
|
|
Sheree suffers from lactose intolerance. If she consumes dairy products, she may suffer from:
|
- diarrhea and bloating
|
|
Mr. Staub was rushed to the hospital because he had intense pain in his chest. After running tests on Mr. Staub it was determined that it was not suffering from a heart attack but _______.
|
- gastroesophageal reflux disease
|
|
___________ was a frontier military physician that worked out many of the details about digestive physiology on an unfortunate gunshot victim named Alexis St. Martin.
|
- Dr. William Beaumont
|
|
The ________ is a muscular tube that passes foodstuffs from the mouth to the stomach.
|
- esophagus
|
|
Normally the stomach empties in ____________.
|
- 2-6 hours
|
|
The thick, soupy liquid of partially digested food that leaves the stomach is called _______.
|
- chyme
|
|
In the small intestines, ____ serves as an emulsifying agent.
|
- bile
|
|
Resident bacteria in the large intestines:
|
- break down indigestible material
- produce Vitamin K - produce Vitamin B |
|
Choose the following that is not recommended for reducing dietary lipids when cooking.
|
- Use butter instead of herbs and spices.
|
|
______ is an enzyme secreted by the pancreas that works in the small intestines in order to begin the digestion of proteins.
|
- Trypsin
|
|
A serious genetic disorder known as hemochromatosis is often called the rusty organ disease and affects nearly 1.5 million Americans. The disorder causes increased absorption of intestinal iron. The _______ is one of several organs that is involved in iron metabolism and shifts color. Blood-letting is a common treatment for this disorder.
|
- liver
|
|
Choose the correct statement concerning the digestive system.
|
- The first part of the small intestines is the duodenum.
|
|
Which of the following is a digestive hormone that causes the liver to increase its production of bile and the gallbladder to release stored bile?
|
- CCK
|
|
Indigestible plant material, recommended because it reduces colon cancer, is called:
|
- fiber
|
|
A bacterial disorder that reduces the elasticity of the lungs is _____. This lung disorder is very virulent.
|
- tuberculosis
|
|
The __________ tubes lead from the nasopharynx to the middle ears.
|
- eustachian or auditory
|
|
The process of filtering or removing dust and other particles in the upper respiratory tract is accomplished by:
|
- nasal hairs
- cilia - mucous |
|
Which is not a part of the pharynx.
|
- mesopharynx
|
|
Which of the following is not considered a part of the upper respiratory tract?
|
- bronchus
|
|
The __________ houses the vocal cords.
|
- larynx
|
|
__________ pressure is important in the process of inspiration.
|
- Negative
|
|
Which of the following statements is accurate regarding the normal mechanism of ventilation?
|
- The inner and outer pleural membranes must be separated by a thin film of fluid.
|
|
The nasal cavities empty into the __________.
|
- nasopharynx
|
|
The __________ is the respiratory control center of the brain.
|
- medulla oblongata
|
|
Which is the correct sequence of air movement during inspiration?
|
- pharynx, larynx, trachea, bronchi, bronchioles
|
|
In order to save her life, EMT's performed an emergency ____________ on Monica because she was not getting air to her lower respiratory system.
|
- tracheostomy
|
|
Jenny was upset because her scratch test for TB was positive although she never had the disease. How could this happen?
|
- She had antibodies against TB in her body due to exposure.
|
|
____________ in the pharynx are actually a part of the lymphatic system.
|
- Tonsils
|
|
Samantha has a deep cough in which she expectorates mucus and pus. Her doctor feels she has a bacterial infection of the primary and secondary bronchi called:
|
- acute bronchitis
|
|
Why does your nose run when you cry?
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- the excess tears produced in the lacrimal gland flood the ducts that drain into the nose
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Manny choked because a morsel of food slipped by his ________ that normally guards the superior opening of the larynx.
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- epiglottis
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Rick's dad suffered from pleurisy. The pain was due to ___________.
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- inflammation of the parietal and visceral pleura
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As Lisa sang her favorite song, how was her pitch changed?
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- Muscles attached to the vocal cords create variations of tension.
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The alveoli of human lungs are lined with a surfactant. This surfactant:
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- is a film of lipoprotein that lowers the surface tension, thus preventing closure
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Each lobe consists of a ___________ that serves many alveoli.
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- bronchiole
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The site of gas exchange in the lungs is called ______.
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- alveoli
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Infant respiratory syndrome is a life threatening disorder that causes the lungs to collapse. It is caused by a lack of ____ in the lungs.
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- surfactant
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The windpipe is more accurately called the ____.
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- trachea
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