Which type of chemical reaction combines reactants to produce larger products?
a) synthesis
b) decomposition
c) potential
d) exchange
e) activated
Answer: a
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Which of the following is not true of acetylcholine?
A) It binds to receptor membrane channels. B) It diffuses across the synaptic cleft. C) It is stored in the neuron in vesicles. D) It enters the muscle fiber to release calcium form the sarcoplasmic reticulum. E) It is digested by acetylcholinesterase.
If a prime mover flexes a joint:
a. the synergist will extend the joint b. the synergist and antagonist will extend the joint c. the antagonist will extend the joint d. the antagonist will assist in flexing the joint
Why is arterial blood pressure higher than venous?
A) Arteries have more smooth muscle. B) Arteries need more oxygen. C) Arteries are closer to the heart and its force. D) Arteries have valves that prevent backflow of blood.
To measure GFR, an individual's urine is examined for the concentration of a test substance that they received by injection. How is that test substance treated by the kidney?
A. It is filtered but neither reabsorbed nor secreted. B. It is filtered and secreted, but not reabsorbed. C. It is not filtered, but it is secreted and reabsorbed. D. It is filtered, reabsorbed, and excreted, but it is not secreted. E. It is neither filtered nor reabsorbed, but it is secreted.