Which of the following statements about the autonomic nervous system is false?
a) Every autonomic pathway consists of a two neuron chain
b) The cell body of the first neuron in each autonomic pathway lies in the CNS
c) Acetylcholine is released by the postganglionic neuron in every autonomic pathway d) The parasympathetic nervous system is used primarily for routine housekeeping duties
e) None of the above are false
Answer: c) Acetylcholine is released by the postganglionic neuron in every autonomic pathway d) The parasympathetic nervous system is used primarily for routine housekeeping duties
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In a pond, tadpoles eat algae and fish eat the tadpoles. Above the pond, grasshoppers eat grass and, at night, are preyed upon by bats. Other bats eat the fish that eat the tadpoles. In this community, the tadpoles are:
A. primary producers. B. primary consumers. C. secondary consumers. D. tertiary consumers. E. detritivores.
When triglycerides are hydrolyzed, they are broken down into glycerol and fatty acids. The fatty acids are further
broken down into two-carbon fragments in a process called fatty acid oxidation. At which pathway do these fragments enter respiration?
a. glycolysis b. pyruvate oxidation c. citric acid cycle d. oxidative phosphorylation e. carbohydrate hydrolysis
Cryptococcus neoformans is a ________.
A. gram-positive bacterium B. prion C. fungus D. gram-negative bacterium
Your roommate tells you that because she has no time to eat healthy foods, she is taking megadoses of vitamins. You warn her that this may be dangerous, because certain vitamins can accumulate in body fat
Megadoses of which of the following vitamins would be most likely to cause toxic effects? A) Vitamin C B) Vitamin E C) Folic acid D) Thiamin