Neurotransmitters are released upon stimulation from a nerve impulse by the ________
A) myofibrils
B) sarcoplasmic reticulum
C) thick filaments
D) axon terminals of the motor neuron
E) sarcolemma of the muscle cell
Answer: D) axon terminals of the motor neuron
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A regression analysis predicts how much one variable will change in response to a change in a second variable
Indicate whether the statement is true or false
The ability to extend a leg is the result of
a. contraction of ligaments and tendons. b. contraction of a muscle. c. lengthening of a muscle. d. a combination of push and pull by antagonistic muscle pairs. e. relaxation of myosin and actin proteins.
The concept that a set of three nucleotides specifies a particular amino acid provides the basis for
A) the one-gene-one-enzyme hypothesis. B) the one-gene-one-polypeptide hypothesis. C) the genetic code. D) biochemical reactions among nucleic acids. E) All of these
Answer the following questions true (T) or false (F)
1. A molecule that has lost electrons has been reduced. 2. In order for one molecule to be oxidized, another molecule must be reduced. 3. Glycolysis probably evolved before the Krebs cycle.