The alpha-helix and beta sheet are examples of ________ protein structure
A) primary
B) secondary
C) tertiary
D) quaternary
E) pentanary
B
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As an object moves closer to the eye,
A. the lens flattens. B. the eyes rotate medially. C. the ciliary muscles relax. D. the diameter of the pupil increases. E. the eye blinks.
Explain how the analogy of a ball and a hill is useful for describing the forms of energy to beginning physiology students. Use the synthesis of glucose by plants and the break down of glucose by humans as specific examples of the energy hill.
What will be an ideal response?
Segmental contractions are mixing contractions that occur predominantly in the ________.
A. large intestine B. small intestine C. stomach D. esophagus E. oral cavity
The two intrinsic defense systems have many components. Which of the following cell types is not a contributor to specific immunity?
A. Natural killer cells B. Plasma cells C. B cells D. T cells