An enzyme is

A) the genetic material.
B) a protein that promotes metabolic reactions by slowing reactions that are too fast.
C) a molecule, usually a protein, that speeds the rate of a biochemical reaction by
lowering the activation energy.
D) usually a vitamin.


C

Anatomy & Physiology

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Identify the true statement(s)

a. Slow-wave sleep occupies a greater percentage of time than paradoxical sleep. b. It is harder to fall asleep when fully awake than to stay awake when sleepy. c. Slow-wave sleep is characterized by frequent shifts in body position. d. Sleep-on neurons in the slow-wave sleep center bring on sleep. e. All of the above

Anatomy & Physiology

Why is it important to know the standards for viewing cross-sectional images?

What will be an ideal response?

Anatomy & Physiology

Which of the following is NOT a stimulus for various mechanoreceptors?

A. Deep pressure B. Cold temperature C. Vibration D. Stretch E. Light touch

Anatomy & Physiology

Pyrogens are

A. medicines taken for immune disorders. B. phagocytic cells that engulf pathogens. C. plasma proteins that bind to antigens. D. tissue chemicals that initiate a fever.

Anatomy & Physiology