Select all of the statements that illustrate advantages of live, attenuated vaccines. Select All That Apply
What will be an ideal response?
Answer Has No Spaces! (EX: !FH
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Goldfish are very hardy fish, which is why they have been in the pet trade for so long. They
are generalist feeders and can tolerate a wide range of oxygen concentrations as well as high levels of nitrogen (due to waste buildup in a small fish bowl). Based on this, goldfish ____________________.
a. have a large microhabitat b. have a broad ecological niche c. face almost no constraints or tradeoffs d. live in macrohabitats
Which letter indicates the direction of incoming light in a typical vertebrate?
Vision differs from the other senses in two interesting ways. Although most sensory receptor neurons are depolarized when the receive a stimulus, rod and cone cells become hyperpolarized when they receive light. When hyperpolarized, they stop releasing inhibitory neurotransmitter and allow the bipolar cells to fire. A second unusual aspect is that the vision circuit seems to be organized "backwards" -- the light must pass through the layers of ganglion and bipolar cells to reach the rods and cones.
A. A
B. B
C. C
D. D
E. All of the directions are possible.
What is the function of ribosomes?
a. plasma membrane stabilization b. receiving raw materials from the environment c. polypeptide assembly d. increasing tonicity e. directing the activity of DNA
HIV affects
a. the human reproductive system. b. the human circulatory system. c. the human respiratory system. d. the human immune system. e. the human digestive system