Adult stem cells may be found in ________.
A. skeletal muscle
B. the brain
C. red bone marrow
D. hair follicles
E. All of the choices are correct.
Answer: E
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Cyanide is a molecule that binds irreversibly to and acts as an allosteric inhibitor for one of the cytochromes in the electron transport chain. Which of the following molecules would you see increased in the cells of a person suffering from cyanide poisoning?
A. NAD+ B. Pyruvate C. Glucose D. ATP E. NADH
Which of the following does not characterize the sympathetic nervous system?
a. It promotes responses that prepare the body for strenuous physical activity. b. It is part of the autonomic nervous system. c. It has norepinephrine as its postganglionic neurotransmitter. d. It is always excitatory (that is, it increases the activity in every tissue it innervates). e. It is part of the efferent division of the peripheral nervous system.
What are the most abundant plasma membrane lipids?
a. cholesterol b. unsaturated fat c. phospholipids d. omega-6 fatty acids e. lecithin
The layman's name for the clavicle is the:
a. collar bone b. kneecap c. shinbone d. elbow