Which of the following events occurs because of the low pH of the stomach?
A. Proper environment for functioning of pepsin
B. Enhanced carbohydrate digestion
C. Lipid digestion
D. Activation of salivary amylase
E. Protein synthesis
Answer: A
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Which hormone is responsible for inhibiting the release of gastric juice?
A) CCK B) SIP C) Pepsin D) Gastrin
Which of the following is not true of the hormone insulin?
A. It inhibits protein synthesis and fat storage. B. It lowers the blood sugar level. C. It causes facilitated diffusion of glucose across the plasma membranes of its target cells. D. It causes the synthesis of glycogen from glucose in the liver and skeletal muscles. E. All of these are true of the hormone insulin.
You are given the following assignment. Obtain two small chicken or turkey bones. Bake one bone in the oven at a high temperature for approximately 30 minutes. Place the other in vinegar (acidic pH) for several days. Which of the following would most accurately reflect what occurred?
a. Proteins in the bone matrix have denatured in the bone that is baked, and the vinegar has denatured the proteins in the soaked bone, so both bones are flexible. b. Proteins in the bone matrix are lost from the baked bone, and the bone becomes flexible. The soaked bone loses calcium and results in a brittle bone. c. Proteins in matrix have denatured from high temperature, and the bone is brittle; calcium has been removed from the bone soaked in vinegar and it has become flexible. d. Proteins are lost in the baked bone matrix, and this bone becomes flexible. Calcium loss from the bone soaked in vinegar results in a flexible bone.
The ________ transports and eliminates waste.
A. pancreas B. large intestine C. stomach D. small intestine