What is the main function of cellular tight junctions?
A. They resist forces that tend to pull cells apart.
B. They form barriers that restrict the passage of materials through the extracellular space between cells.
C. They are protein channels that allow the movement of ions between the cytosol of adjacent cells.
D. They are spaces that allow movement of substances between the interior of the nucleus and the cytosol.
E. They hold the genetic material in a tightly coiled conformation.
B
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The absorptive state occurs
A. about 12 hours after a meal, when you are sleeping. B. from when you are eating until about 4 hours after the meal.
Cells in the lungs that phagocytize inhaled debris are known as __________ __________.
Fill in the blank(s) with the appropriate word(s).
A very highly stretched muscle will produce a contraction that is
A) fairly weak. B) much greater than average. C) slightly stronger than resting position. D) optimal. E) None of the answers are correct.
An interview would be considered to have which of the following levels of applicability?
A. Low B. Medium C. High D. None