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32 Cards in this Set
- Front
- Back
Why do bananas in a bag ripen so much faster than bananas on a counter top? |
Ethylene, produced by the fruit, is trapped in the bag. |
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Which of the following is technically not a fruit? |
Lettuce |
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How does the skin act as a barrier to microbial invasion? |
Secretions from sweat glands and sebaceous glands inhibit bacterial growth. |
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Which structure prevents foods and liquids from entering the lungs? |
epiglottis |
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In plants, the diploid, multicellular organism is the: |
Sporophyte |
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Animals need a respiratory system because each cell of their bodies is involved in the process of: |
cellular respiration. |
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A scientist who claims to have discovered a new plant hormone must demonstrate that this compound is: |
formed in one part of the plant but has an effect in a different part. |
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The place where a neuron communicates with a muscle fiber, a gland, or another neuron is called the: |
synapse. |
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Where are apical meristems located? |
at the ends of the roots and stems |
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After passing through the nasal cavities, incoming air next moves to the: |
pharynx. |
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In plants, the haploid, multicellular organism is the: |
gametophyte. |
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What is the evolutionary significance of a flower that has large, brightly colored petals? |
These flowers attract pollinators that are animals. |
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The ________ valve is between the right ventricle and the pulmonary artery. |
semilunar |
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________ are white blood cells that attack cancer cells. |
T cells |
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An artificial pacemaker is a device that replaces the actions of the: |
sinoatrial node. |
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Electrical signals are transmitted to the synaptic terminals along the: |
axon |
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Which of the following is an example of a nonspecific response to infection? |
fever |
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MHC (major histocompatibility complex) proteins: |
mark cells as "self." |
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A plant's tendency to grow toward a source of light is called: |
phototropism. |
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What is the role of valves in the veins? |
They keep blood from flowing backward when the veins are squeezed by skeletal muscles. |
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When your blood pressure is measured from an artery in your arm, it is a measurement of the pressure produced by your: |
left ventricle. |
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How does carbon dioxide enter a leaf? |
CO2 passes through openings called stomata on the leaf surface. |
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All of the following are true of the SA node EXCEPT that it: |
directly stimulates the ventricles. |
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The left ventricle is more muscular than the right ventricle because it must push the blood: |
through the body's extensive system of vessels that nourish all cells. |
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Which of the following is part of the peripheral nervous system? |
autonomic nervous system |
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In vertebrates, which heart chamber supplies oxygenated blood to the body cells? |
left ventricle |
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Which mineral is important for carrying O2 in the blood? |
iron |
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Bile aids in fat digestion by: |
breaking lipids into smaller components that can then be digested further by pancreatic enzymes. |
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Endocrine communication depends on: |
chemicals secreted into the blood for delivery. |
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"Big eater" cells that ingest and destroy microbes are: |
macrophages. |
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Endocrine hormones are: |
biochemicals released from one cell and transferred via the blood to other (target) cells. |
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Gap junctions: |
allow the rapid passage of electrical signals among heart cells. |