One way that cells can increase their responsiveness to an external chemical regulator is by
A. increasing the number of their transmembrane receptors by endocytosis.
B. increasing the number of their transmembrane receptors by exocytosis.
C. uncoupling their receptors from the second message generator.
D. mutating their extracellular receptors so that the affinity for the chemical regulator is reduced.
E. decreasing the number of their transmembrane receptors by endocytosis.
Answer: B
You might also like to view...
Tom tries a new diet that involves no food intake. Instead of eating, he takes plenty of multivitamin pills. This is OK because vitamins are a significant source of energy.
Answer the following statement true (T) or false (F)
Edema would be induced by all of the following EXCEPT ________.
A. lymphatic blockage B. hyperthyroidism C. protein malnutrition D. hypertension
Quid pro quo sexual harassment is represented by which of the following?
A. the telling of off-color jokes at the workplace B. the use of profanity at the workplace C. unwanted touching between employees D. an offer of a promotion in exchange for sexual conduct
Answer the following questions true (T) or false (F)
1. Fatty acids cannot undergo gluconeogenesis to produce glucose molecules. 2. The synthesis of fatty acids is known as lipolysis. 3. Excess proteins from a high-protein diet cannot be stored as fat.