A hydrostatic skeleton consists of _____
a. a fluid in an enclosed space
b. hardened plates at the surface of a body
c. internal hard parts
d. none of these
A
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The method of nucleotide sequence determination that utilizes dideoxynucleotides was developed by ________.
Fill in the blank(s) with the appropriate word(s).
The letter D indicates the ____
a. first trophic level b. second trophic level c. third trophic level d. fourth trophic level e. fifth trophic level
Ion channels are _____ in the plasma membrane that allow _____ to pass through
glycoproteins; ions phospholipids; cholesterol ions; proteins proteins; ions
A bird in your care has an infection in its air sacs. What do you predict would be the effect of this infection?
A. Since the air sacs are vestigial, there would be no effect. B. Metabolism and overall activity levels would decline as a result of lower oxygen flow. C. The bird would be unable to fly as a result of aerodynamic changes in the infected air sacs. D. The bird would be much more vulnerable to toxic gases as the air sacs could no longer be protective.