Which of the following correctly describes the atomic number?
A. The combined number of protons and neutrons
B. The combined number of protons and electrons
C. The number of electrons
D. The number of protons
Answer: D
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Which of the following is true of a muscle that is relaxing?
A) Oxygen is depleted. B) Released calcium ions are present. C) ATP levels are low. D) The tendons are taut. E) AChE is present in the synaptic cleft.
In response to increased concentration of the final product of a metabolic pathway, ________.
A. all enzymes in the pathway become less active B. the final product acts as an allosteric regulator of one enzyme in the pathway C. intermediate enzymes become more active D. all enzymes in the pathway become more active
Which of the following statements best illustrates the fact that skeletal muscle is voluntary muscle?
A) Skeletal muscle is wrapped in several layers of connective tissue. The deepest layer being the endomysium. B) Skeletal muscle appears striated due to the structure of the sarcomeres. C) Skeletal muscle fibers are innervated by somatic motor neurons. D) The shivering reflex aids in maintaining body temperature.
What is the enlarged structure at the tip of the penis?
A) corona B) glans C) prepuce D) body