Receptor-mediated endocytosis
A) is a type of secretion.
B) imports target molecules after they bind to membrane proteins.
C) does not require energy from the cell.
D) can only move a substance down its concentration gradient.
E) imports extracellular fluid, including all of its dissolved molecules.
B
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A cartilaginous joint that does permits movement is (a)
A) synostosis. B) synovial joint. C) symphysis. D) synchondrosis. E) None of the answers are correct.
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A) phagocytosis of damaged or infected cells circulating with the blood. B) addition of many new NK cells to the circulation. C) production of B and T cells. D) maturation of T cells. E) All of the answers are correct.
Homeostasis is the body's maintenance of an unstable internal environment
Indicate whether the statement is true or false