What cytoskeletal protein is phosphorylated by the M cyclin-CDK complex?
A. microfilaments
B. microtubules
C. intermediate filaments
D. All of the above are correct.
C
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Membrane sterols, such as cholesterol, function in animal cell membranes to ____
a. increase the rate of diffusion b. store cellular energy c. facilitate ion transport d. maintain membrane fluidity e. receive chemical signals
Which of the following is a type of microscope?
a. convex b. UV light c. dissecting d. scanning proton
A muscle that causes any type of movement in a joint when it contracts is called a(n)
a. flexor. b. agonist. c. depressor. d. antagonist. e. extensor.
Which combination describes the plasma membrane?
A) Hydrophilic interior, hydrophobic exterior B) Hydrophilic interior and exterior C) Hydrophobic interior, hydrophilic exterior D) Hydrophobic interior and exterior