If you put the following events in the order they occur in the human digestive system, the third event in the series would be:
a. Cells in gastric pirs secrete protons
b. Pepsin activates pepsinogen
c. HCl activates pepsinogegn
d. Partially digested food enters the small intestine
Answer: b. Pepsin activates pepsinogen
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The movement of water is critical to life. Discuss how the movements of water (both horizontal and vertical) affects climate and coastal productivity
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If all the offspring of a cross had the genotype
AaBb, the parents of the cross would most likely be
a. AABB ? aabb. b. AAbb ? aaBB. c. AaBb ? AaBb. d. Aabb ? aaBb. e. AABB ? aabb or AAbb ? aaBB
Tissues on either sides of an apical meristem in a shoot develop into ____
a. flowers b. branches
c. lateral meristems d. leaves e. roots
A cuticle
a. resists water loss. b. covers epidermal cells. c. may contain waxes and cutin. d. resists attack by microorganisms. e. does all of these