Many second messenger systems activate ________, enzymes that transfer a phosphate group from ATP to a protein. The phosphorylation of proteins sets off a series of intracellular events that lead to the ultimate cellular response.
Fill in the blank(s) with the appropriate word(s).
protein kinases
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The general name given to the phenomenon that occurs when a mature epithelium changes to a different form is
A. hyperplasia. B. hypertrophy. C. neoplasia. D. metaplasia. E. mesothelia.
When renin is released from the kidney,
A) angiotensin II is converted to angiotensin I. B) angiotensin I formation is triggered. C) angiotensin I increases salt reabsorption at the kidneys. D) blood pressure goes down. E) blood flow to the kidneys decreases.
Which is a major function of the plasma membrane?
A. storing calcium ions B. storing organic chemicals for metabolism C. providing genetic information D. generating ATP E. regulating the passage of molecules into and out of the cell
What can a deficiency of growth hormone during bone formation cause?
increased osteoclast activity decreased proliferation of the epiphyseal plate cartilage inadequate calcification of bone decreased osteoclast activity