Which of the following is the most important method of capillary exchange?
a) diffusion
b) transcytosis
c) bulk flow
d) primary active transport
e) secondary active transport
a
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A water-soluble hormone binds to its receptor on the plasma membrane. Arrange the events that follow in correct sequence
(1) alpha subunit-GTP complex alters cell activity (2) GTP binds to the alpha subunit replacing GDP (3) G-protein subunits separate from the receptor (4) alpha subunit separates from other two subunits (5) G-protein subunits bind to the receptor A. 5, 2, 3, 4, 1 B. 4, 2, 1, 3, 5 C. 5, 2, 1, 4, 3 D. 5, 4, 2, 1, 3 E. 3, 4, 1, 2, 5
If a cell's Na+-K+ pumps quit working, all of that cell's secondary active transporters would quit working immediately
Indicate whether the statement is true or false
Each mandibular condyle articulates with a mandibular _________ of the temporal bone.
Fill in the blank(s) with the appropriate word(s).
Which is true regarding pyrogens?
A) They can reset the temperature-regulating center in the hypothalamus and raise the body temperature. B) They break down tissue by autolysis, releasing digestive enzymes that first destroy the injured cells and then attack surrounding tissues. C) They act only within one tissue. D) They are particularly sensitive to chemicals released by other body cells or by pathogens. E) They make capillaries more permeable and speed up blood flow through the area within the damaged tissue.