Ion channels

a. can exist in open or closed states.
b. are typically selective with respect to the types of substances that pass through them.
c. can selectively repel particular ions.
d. all of these.
e. none of these.


D

Anatomy & Physiology

You might also like to view...

________ reflexes perform the simplest functions of the autonomic nervous system

A) Somatic B) Cranial C) Spinal D) Visceral E) Consensual

Anatomy & Physiology

Which of the following is a function of eosinophils?

A. They produce histamine in response to inflammation. B. They produce heparin. C. They destroy body cells infected with viruses. D. They phagocytize antigen-antibody complexes. E. They produce antibodies.

Anatomy & Physiology

The joint between the left and right parietal bones is called the ________

A) coronal suture B) cranial joint C) sagittal suture D) lambdoid suture E) parietal joint

Anatomy & Physiology

Which of the following is NOT a fate of absorbed glucose?

A. It is converted to fatty acids and alpha-glycerol phosphate by liver cells. B. It is converted to glycogen by liver cells. C. It is converted to fatty acids and alpha-glycerol phosphate in adipose cells. D. It is converted to urea by liver cells. E. It is converted to glycogen in muscle cells.

Anatomy & Physiology