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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.
- Biology
Choose the highest level of organization
- organ systems
What human organ system is responsible for exchanging gases with the outside environment?
- respiratory system
Choose the correct statement about how humans fit in with the rest of nature.
- 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
In what ways do humans threaten the biosphere and damage ecosystems?
- 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
- principle
Organisms within communities and ecosystems feed on one another to obtain energy and nutrients. What component does not cycle within an ecosystem?
- energy
Koch's postulates are used in order to show:
- that a pathogen causes a particular disease
The _______ theory declares that all organisms contain coded information that dictates their form, function, and behavior
- gene
Information from scientific journals is more highly regarded than information from other sources because:
- 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
Which of the following tells us how uncertain a particular value is in a report of a scientific study?
- standard error
Which of the following is not a component of a statistical study?
- experimentation
A keystone species is one:
- whose extinction will have an effect throughout a community
Polar bears are vulnerable to extinction because of:
- chemical pollution
- global warming
- oil and gas exploration
A practice that involves the storage of embryos, sperm and eggs at a very low temperature is called:
- cryopreservation
The process that transforms solar energy into chemical energy in the bonds of organic molecules is called _____.
- photosynthesis
Homeostasis is _____.
- the maintenance of internal conditions within certain limits
As biological organization increases in complexity in living systems, new _________ are determined with unique characteristics governed by chemical and physical interactions.
- emergent properties
The correct way to write the scientific name of the garden pea is _____.
- Pisum sativum
All the organisms classified into the Domain ______ are _________.
- archaea; single celled
The theory that accounts for the differences that divide and the unity that joins all living things is the _____ theory.
- evolution
The great diversity of life forms is the result of _____.
- adaptations to different environments
- descent from a common ancestor
Which of the given statements is NOT true?
- The role of evolution does not help support the meaning of life's diversity.
Which of the following statements best represent the role of mutations in natural selection:
- Mutations fuel natural selection through the introduction of variable genes capable of being passed to new generations through reproduction.
The great pattern of organization in nature is maintained by _______.
- flow of energy from the sun
Negative impacts on the biodiversity of healthy ecosystems have included ALL of the following activities EXCEPT:
- An increase in the size and volume of barrier reefs
he cycling of nutrients through ecosystems depends on _____.
- photosynthesis
- respiration
- decomposition of organisms after they die
The first step in the scientific method is _____.
- make observations and consider previous data
When a person combines isolated facts and creative thinking to arrive at an explanation for something, he/she used _____ reasoning.
- inductive
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 _______________.
- homeostasis
Which of the following elements is NOT one of the six that make up 98% of most organisms' body weight?
- 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
Which of the following has a basic pH?
- milk of magnesia
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.
The combined number of ___________ will determine the number of electrons in orbital(s) around a neutral atom.
- protons
Which bond is most easily broken?
- a hydrogen bond
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
If a patient is injected with radioactive iodine, a radioisotope scan would show it appear in the ___________.
- thyroid
Hydrophobic molecules tend to be _________.
- nonpolar
The two parallel strands of DNA are held together by _______ bonds.
- hydrogen
The calcium ion (Ca2+) _____.
- has given away two electrons
A pH of 5 is __________ times as acidic as a pH of 9.
- 10,000
Hydrogen bonds form when ___________.
- a slightly negative atom is attracted to a slightly positive atom
The only atom that has a nucleus with no neutrons is _________.
- hydrogen
As the result of the work of ___________ the idea of spontaneous generation was dismissed.
- Louis Pasteur
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.
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.
- Archaea
Why is cell division important as related to the size of cells?
- 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.
- resolving power
___________ is a genetic disorder that is related to lysosomal disfunction.
- Tay-sachs Disease
Brad placed a water plant called Elodea in some distilled water. What happened in the cells of the plant?
- The cells burst
The ___________ is a structure found in eukaryotic cells that houses the genetic material
- nucleus
________ 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.
- All living things are made of cells and cells come only from pre-existing cells
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.
- hypertonic
Which one of the following is not part of the cytoskeleton?
- microbodies
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
The assisted transport of a molecule across the cell membrane without an expenditure of energy is known as ______.
- facilitated transport
The _______ is a stack of slightly curved saccules that are important in packaging and secretion.
- Golgi apparatus
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
In developing embryos such as a chick, _________ restores the amount of surface area needed for exchange requirements.
- 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 ____________________.
- Glucose
The __________ provides a three-dimensional view of the surface of an object.
- scanning electron microscope
f a cell has a volume of 3nm, what are the surface area and the volume of the cell?
- 54nm^2, 27nm^3
MELAS is a recently described disorder that is related to improper energy relationships within cells. Which structure organelle may be faulty?
- Mitochondria
If a cell lacked ribosomes, it would not be able to:
- synthesize proteins
The rough endoplasmic reticulum is important in the synthesis of _______ and the smooth endoplasmic reticulum is important in synthesizing _______.
- proteins, phospholipids
Organic non-protein molecules which assist the activity of an enzyme are called:
- coenzymes
Basal bodies are associated with:
- cilia and flagella
When the cell cycle has lost control, a ___________ may result.
- tumor
The primary function of the mitotic spindle is to:
- move sister chromatids to opposite poles.
The second meiotic division is essentially mitosis, except that the resultant cells in which this division occurs are:
- haploid
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
During ____________ of the cell cycle, typically the nucleolus disappears.
- prophase
Perhaps the legend of pixies can be associated with _____ syndrome.
- William's
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
In 2004 the Individuals with Disabilities Education Act (IDEA) was initiated and required public schools to develop:
- an Individualized Education Plan (IEP) for all qualifying disabled children
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:
- chromosomes
During ________ the chromosomes line up along the equatorial plane
- metaphase
During the process of meiosis I the __________ pair up in synapsis.
- homologous chromosomes
A ______ is a group of symptoms that always occur together.
- syndrome
The process of mitosis is comprised of four stages. Which statement correctly places the stages in order?
- prophase, metaphase, anaphase, telophase
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
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.
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
What structure within a capillary bed shunts blood from the arteriole to the venule?
- precapillary sphincter
An instrument that is used to measure blood pressure is known as a/an ___.
- sphygmomanometer
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
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
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?
- the excess tears produced in the lacrimal gland flood the ducts that drain into the nose
Manny choked because a morsel of food slipped by his ________ that normally guards the superior opening of the larynx.
- epiglottis
Rick's dad suffered from pleurisy. The pain was due to ___________.
- inflammation of the parietal and visceral pleura
As Lisa sang her favorite song, how was her pitch changed?
- Muscles attached to the vocal cords create variations of tension.
The alveoli of human lungs are lined with a surfactant. This surfactant:
- is a film of lipoprotein that lowers the surface tension, thus preventing closure
Each lobe consists of a ___________ that serves many alveoli.
- bronchiole
The site of gas exchange in the lungs is called ______.
- alveoli
Infant respiratory syndrome is a life threatening disorder that causes the lungs to collapse. It is caused by a lack of ____ in the lungs.
- surfactant
The windpipe is more accurately called the ____.
- trachea