The "r" in rRNA stands for
A) regeneration.
B) recurrence.
C) rebuilding.
D) ribosomal.
E) radiation.
D
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Which of the following is an example of a free macrophage?
a. Kupffer cell b. microglial cell c. alveolar macrophage d. all of the listed responses are correct
Which statement about taste cells is false?
A. They secrete a neurotransmitter to stimulate the sensory neuron at their base. B. They are the bumps that cover the surface of the tongue. C. They are epithelial cells with sensory neurons at their base. D. They have taste hairs on their surface.
The triceps brachii helps the pectoralis major flex the arm. In this example the triceps is which of the following?
A. An antagonist B. A fixator C. A synergist D. An agonist
Which of the following is characteristic of carbohydrates?
A) all of the above. B) They contain C, H, O, with twice as many hydrogen as oxygen atoms. C) They provide much of the energy that the cell requires. D) They include sugars and starches.