The drug cytochalasin targets actin filaments in the cytoskeleton, preventing them from forming. Treatment of a cell with cytochalasin would result in its inability to ________.
A. prevent mutations in its chromosome
B. form the nuclear envelope structure
C. transport substances within the cell
D. form cellular extensions
Answer: D
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The secretion of follicle-stimulating hormone from the anterior pituitary gland is reduced by _____
A) inhibin B) luteinizing hormone C) oxytocin D) prolactin E) vasopressin
The stage of mitosis characterized by the physical separation of sister chromatids is called:
A. Telophase B. Prometaphase C. Anaphase D. Metaphase
Which statement applies to facilitated diffusion?
a. It requires ATP. b. It can involve either carrier proteins or channel proteins. c. It is nonspecific with respect to the nature of the molecules being transported. d. It is not dependent on a concentration gradient.
Fiber content of the diet can be increased by adding
a. fresh fruits. b. fish and poultry. c. eggs. d. whole grains and cereals. e. Both a and