Which of these brings nonspecific material into a cell?
A. Pinocytosis
B. Receptor-mediated endocytosis
C. Exocytosis
D. Transcytosis
E. Phagocytosis
Answer: A
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A. Medullary cord B. Lymphatic nodule C. Hilum D. Trabecula E. Lymphatic sinusoid
Dizygotic twins result from
A) two egg cells and one sperm cell. B) two egg cells and two sperm cells. C) one egg cell and one sperm cell. D) one egg cell and two sperm cells.
Intrapulmonary shunting is defined as:
A) the return of unoxygenated blood to the left side of the heart. B) a decrease in the surface area of the alveoli caused by damage. C) a condition in which too much carbon dioxide is eliminated. D) failure of blood to bypass an obstruction in a pulmonary artery.
When sodium ions are reabsorbed in response to the action of aldosterone, potassium ions are
A. secreted. B. actively reabsorbed. C. passively reabsorbed. D. reabsorbed.