What structure in most ray-finned fish is responsible for buoyancy control?
a. Gas gland
b. Blubber
c. Squaline
d. Swim bladder
d
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In labyrinthulids, the nonflagellated stage of the life cycle features spindle-shaped cells that form complex colonies that glide rapidly along an ________ net made by the organism.
A. protoplasmic B. ectoplasmic C. pellicular D. endoplasmic
The difference between a Class I and a Class II tRNA synthetase is:
A. the Class I synthetase requires ATP cofactor and the Class II does not. B. the Class I synthetase uses the 2'-OH of 3' end of the tRNA as a nucleophile and the Class II uses the 3'-OH. C. the Class II synthetase reaction requires a transesterification reaction not necessary in the Class I reaction. D. the Class II synthetases are typically monomeric, whereas the Class I enzymes frequently function as multimeric protein complexes.
Members of the subphylum include shrimp, lobsters, and crabs. They generally have five pairs of
appendages on their heads: two pairs of antennae and three pairs of mouthparts, including mandibles.
a. Myriapoda b. Trilobita c. Chelicerata d. Hexapoda e. Crustacea
You are explaining the causes of smoker's cough to a client, including altered function of the cilia in the lining of large respiratory passages. Which of these is true
A. Toxins in cigarette smoke irritate nerves under the cilia, causing a cough. B. Smoking damages the cilia, rendering them unable to sweep mucus out of the respiratory passages, resulting in coughing. C. Smoking causes the cilia to produce more mucus, resulting in coughing. D. Cigarette smoke causes an overgrowth of cilia, leading to cough