What is the unifying principle of the biological sciences?

A. technology
B. evolution
C. biochemistry
D. taxonomy
E. anatomy


Answer: B

Biology & Microbiology

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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.

Biology & Microbiology

What accumulates inside the thylakoid compartment during light-dependent reactions?

a. glucose b. hydrogen ions c. O2 d. CO2 e. ATP

Biology & Microbiology

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

Biology & Microbiology

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

Biology & Microbiology