Which type of cell phagocytizes foreign or injured cells and plays a major role in providing protection against infections?
A. Stem cell
B. Mast cell
C. Adipocyte
D. Osteoclast
E. Macrophage
Answer: E
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The branching structures that, together with the cell body, are sensitive to chemical, mechanical, or electrical stimulation are called
A) axons. B) Nissl bodies. C) synapses. D) dendrites. E) neurofibrils.
The amount of oxygen unloaded from hemoglobin at the tissue level increases when
a. PCO2 in the tissue increases. b. the concentration of DPG in the red blood cells increases. c. the concentration of DPG in the red blood cells decreases. d. both (a) and (b) above. e. both (a) and (c) above.
Which part of the urinary system is not completely retroperitoneal?
a)kidneys b)ureters c)bladder d)nephrons
Which would be true if substance X was moving into a cell by primary active transport?
A. A cell is placed into a 1 millimolar solution of substance X and over time you witness the size of the cell swell. B. A cell is placed into a 1 millimolar solution of substance X and over time you witness the concentration of X inside the cell increase to 1 millimolar. C. A cell is placed into a 1 millimolar solution of substance X and over time you witness the concentration of X inside the cell decrease to 0.5 millimolar. D. A cell is placed into a 1 millimolar solution of substance X and over time you witness the size of the cell shrink. E. A cell is placed into a 1 millimolar solution of substance X and over time you witness the concentration of X inside the cell increase to 5 millimolar.