Regulatory proteins turn these on and off in accordance with changing needs for the proteins they encode.

a) enzymes
b) proteins
c) ribosomes
d) genes


d) genes

Anatomy & Physiology

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In the dark (absence of a stimulus), the photoreceptors are:

A) polarized. B) bleached. C) hyperpolarized. D) depolarized.

Anatomy & Physiology

What is the membrane that lines the medullary cavity?

A. fibers B. endosteum C. growth plate D. medullary cavity E. epiphysis

Anatomy & Physiology

The postcentral gyri of the parietal lobes of the cerebral cortex

a) are considered the primary gustatory area. b) receive body sensory information. c) control voluntary body movements. d) receive visual information. e) provide the ability to move the eyeballs.

Anatomy & Physiology

An important process that can activate a steroid hormone or even change a steroid hormone into a different type of hormone (e.g., changing an androgen into an estrogen) is called:

A. renal excretion B. peripheral conversion C. steroid hormone–receptor binding D. hepatic conjugation E. dimerization

Anatomy & Physiology