Biology Test Questions
Test 3
Chapter 51: 1, 2, 5, 7
1. Most of the metabolic energy needed by a bird for a long-distance migratory flight is stored as
a. glycogen.
b. fat.
c. protein.
d. carbohydrates.
e. ATP.
2. Which statement about essential amino acids is true?
a. They are not found in vegetarian diets.
b. They are stored by the body until they are needed.
c. Without them, one is undernourished.
d. All animals require the same ones.
e. Humans can acquire all of theirs by eating milk, eggs, and meat.
3. Which statement about nutrient absorption by the intestinal mucosal cells is true?
a. Carbohydrates are absorbed as disaccharides.
b. Fats are absorbed as fatty acids and monoglycerides.
c. Amino acids move across the plasma membrane only by diffusion.
d. Bile transports fats across the plasma membrane.
e. Most nutrients are absorbed in the duodenum.
4. Microbial fermentation in the gut of a cow
a. produces fatty acids as a major nutrient for the cow.
b. occurs in specialized regions of the small intestine.
c. occurs in the cecum, from which food is regurgitated.
d. produces methane as a major nutrient.
e. is possible because the stomach wall does not secrete hydrochloric acid.
Chapter 41: 2, 4, 5, 7, 9, 10
1. Both epinephrine and cortisol are secreted in response to stress. Which of the following statements is also true for both of these hormones?
a. They act to increase blood glucose availability.
b. Their receptors are on the surfaces of target cells.
c. They are secreted by the adrenal cortex.
d. Their secretion is stimulated by corticotropin.
e. They are secreted into the blood within seconds of the onset of stress.
2. PTH
a. stimulates osteoblasts to lay down new bone.
b. reduces blood calcium levels.
c. stimulates calcitonin release.
d. is produced by the thyroid gland.
e. is released when blood calcium levels fall.
3. Steroid hormones
a. are produced only by the adrenal cortex.
b. have only cell surface receptors.
c.
Chapter 51: 1, 2, 5, 7
1. Most of the metabolic energy needed by a bird for a long-distance migratory flight is stored as
a. glycogen.
b. fat.
c. protein.
d. carbohydrates.
e. ATP.
2. Which statement about essential amino acids is true?
a. They are not found in vegetarian diets.
b. They are stored by the body until they are needed.
c. Without them, one is undernourished.
d. All animals require the same ones.
e. Humans can acquire all of theirs by eating milk, eggs, and meat.
3. Which statement about nutrient absorption by the intestinal mucosal cells is true?
a. Carbohydrates are absorbed as disaccharides.
b. Fats are absorbed as fatty acids and monoglycerides.
c. Amino acids move across the plasma membrane only by diffusion.
d. Bile transports fats across the plasma membrane.
e. Most nutrients are absorbed in the duodenum.
4. Microbial fermentation in the gut of a cow
a. produces fatty acids as a major nutrient for the cow.
b. occurs in specialized regions of the small intestine.
c. occurs in the cecum, from which food is regurgitated.
d. produces methane as a major nutrient.
e. is possible because the stomach wall does not secrete hydrochloric acid.
Chapter 41: 2, 4, 5, 7, 9, 10
1. Both epinephrine and cortisol are secreted in response to stress. Which of the following statements is also true for both of these hormones?
a. They act to increase blood glucose availability.
b. Their receptors are on the surfaces of target cells.
c. They are secreted by the adrenal cortex.
d. Their secretion is stimulated by corticotropin.
e. They are secreted into the blood within seconds of the onset of stress.
2. PTH
a. stimulates osteoblasts to lay down new bone.
b. reduces blood calcium levels.
c. stimulates calcitonin release.
d. is produced by the thyroid gland.
e. is released when blood calcium levels fall.
3. Steroid hormones
a. are produced only by the adrenal cortex.
b. have only cell surface receptors.
c.