Which of the following gastrointestinal responses is part of the nonspecific host response?
A) Mucociliary blanket
B) Peristalsis
C) Insulin production
D) Decreasing acid production
Ans: B) Peristalsis
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The stacking of thylakoid membranes into grana decreases the surface area for photosynthesis.
a. true b. false
Lucy, a new Army recruit, stood in formation for long periods of time without moving an inch. She eventually became lightheaded and fainted because her blood pressure dropped. What might have caused her blood pressure to drop?
What will be an ideal response?
Why is it that falcons cannot fly as fast as a fighter jet?
A. Adaptive traits must conform to environmental conditions. B. Natural selection can produce deleterious alleles in individuals. C. Adaptive traits are constrained by historical and genetic factors. D. Not all adaptive traits are heritable.
Which of the following is classified as a nonmembranous organelle of eukaryotic cells?
A. endoplasmic reticulum B. Golgi body C. mitochondrion D. centriole E. peroxisome