Up-regulation of receptors

A) Results in increased sensitivity to its ligand.
B) Results in decreased sensitivity to its ligand.
C) Occurs when a ligand has been present at high levels.
D) Both B and C


Answer: A

Anatomy & Physiology

You might also like to view...

The four tissue types are muscle tissue, nervous tissue, connective tissue, and ________ tissue.

Fill in the blank(s) with the appropriate word(s).

Anatomy & Physiology

The prefix an- means _____. Select one:

a. without b. with c. against d. missing

Anatomy & Physiology

During the absolute refractory period which of the following is true?

A. If a neuron reaches threshold, the action potential goes to completion. B. The neuron fires at its maximum voltage if a stimulus depolarizes the neuron to threshold. C. It is possible to trigger a new action potential, but only with an unusually strong stimulus. D. No stimulus of any strength will trigger a new action potential. E. The signal grows weaker with distance.

Anatomy & Physiology

Which is not correct regarding growth hormone (GH)?

A. GH is also known as somatotropin. B. GH is a tropic hormone. C. GH stimulates the kidney to secrete somatomedin. D. GH affects most body cells. E. GH stimulates cell growth and mitosis.

Anatomy & Physiology