Actin filaments will only assemble in parallel bundles
a. true
b. false
Answer: b. false
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Cholesterol is a structural component of cell membranes. Amount of cholesterol present can affect membrane stability and permeability. What is the role of cholesterol in a membrane? A. A membrane that needs to be more rigid and more permeable, would have high cholesterol ratios. B. A membrane that needs to be rigid, such as a protective barrier, would have low cholesterol ratios. C
Membranes with low amounts of cholesterol are very stable and have increased permeability. D. Membranes with high amounts of cholesterol are very stable and have decreased permeability.
Altitude sickness
a. results from hypoxia. b. is characterized by hyperventilation. c. is characterized by nausea. d. is characterized by an accelerated heart rate. e. includes all of these
When comparing the ethical perspectives of John Muir, Gifford Pinchot, and Aldo Leopold, which one is least representative of the ecocentric perspective?
A. John Muir B. Gifford Pinchot C. Aldo Leopold
A stretch receptor is classified as a ____.
A. chemoreceptor B. mechanoreceptor C. photoreceptor D. thermoreceptor E. nociceptor