What is the unifying principle of the biological sciences?
A. technology
B. evolution
C. biochemistry
D. taxonomy
E. anatomy
Answer: B
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All of the following are mechanisms of thermoregulation in ectothermic animals EXCEPT
A. countercurrent heat exchangers. B. changing the rate of heat production by muscular activity. C. changing the rate of heat loss by vasodilation and vasoconstriction. D. relocating to cool areas when too hot or warm areas when too cold. E. insulation in the form of feathers or fur.
What accumulates inside the thylakoid compartment during light-dependent reactions?
a. glucose b. hydrogen ions c. O2 d. CO2 e. ATP
Which kind of exercise makes skeletal muscles
more resistant to fatigue?
a. high intensity-short duration b. low intensity-long duration c. medium intensity-medium duration d. high intensity-long duration e. low intensity-short duration
Which of the following are the four classes of biological molecules?
a. nucleic acids b. RNA c. carbohydrates d. sucroses e. proteins f. lipids g. DNA h. cholesterols