Which of the following is a physiological mechanism used by endotherms to dissipate heat?

a. basking
b. contact with hot surfaces, such as rocks
c. vasodilation
d. group activities that generate heat


c. vasodilation

Biology & Microbiology

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What is the main purpose of cellular respiration?

A. To produce sugars B. To produce oxygen C. To produce ATP D. To produce carbon dioxide

Biology & Microbiology

Cutaneous mycoses are called ________.

A. tineas B. dermatomycoses C. ringworms D. All of the choices are correct.

Biology & Microbiology

The digestion of proteins in humans begins in the

a. large intestine. b. mouth. c. pancreas. d. small intestines. e. stomach.

Biology & Microbiology

The plasma membranes of some plant cells use transport proteins to move protons out of the cell against their concentration gradient (from areas of low proton concentration to areas of high proton concentration). This is an example of:

a) simple diffusion b) active transport. c) endocytosis. d) facilitated diffusion. e) passive transport

Biology & Microbiology