Which of the following is a component of a molecule of ATP? Select all correct choices
A. three phosphate groups
B. ribose
C. adenine
D. three phosphate groups and ribose
Answer Key: A,B,C,D
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The smartest of all invertebrates is the ____
a. octopus b. squid c. slug d. ant e. crab
Transmitter substances
a. are expelled from the presynaptic cells by exocytosis. b. tend to destroy acetylcholine. c. enter the postsynaptic cell to continue the passage of the impulse. d. interact with membrane receptors of the postsynaptic cells. e. are expelled from the presynaptic cells by exocytosis and interact with membrane receptors of the postsynaptic cells.
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