Which of the following is a function of erythrocytes?
A. To defend the body against pathogens
B. To initiate blood clotting
C. To regulate erythropoiesis
D. To transport nutrients
E. To transport carbon dioxide
E. To transport carbon dioxide
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A pacemaker is a surgically implanted electronic device that regulates the patient's heartbeat.?
Indicate whether the statement is true or false
Which of the following is NOT true about phospholipids?
a) They contain a glycerol backbone. b) The head group is polar. c) The molecule is an important part of cell membranes. d) The tail groups are nonpolar. e) They are a major form of energy storage.
Which of the following terms is NOT used to define the structure that separates the contents of a human cell from its surrounding medium?
A) a cell membrane B) a cell wall C) plasmalemma D) plasma membrane E) All of the answers are correct.
A cell has three major parts: the plasma membrane, the nucleus, and the cytoplasm
a. True b. False Indicate whether the statement is true or false