Biology
4th Edition
ISBN: 9781259188121
Author: Peter Stiling, Robert Brooker, Linda Graham, Eric Widmaier
Publisher: McGraw-Hill Education
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Textbook Question
Chapter 46, Problem 2TY
Gluconeogenesis
- a. occurs when the liver synthesizes glucose from noncarbohydrate precursors.
- b. is the process by which glycogen is broken down to glucose.
- c. occurs primarily when an animal is in the absorptive state.
- d. occurs when triglycerides are being formed and stored in adipose cells.
- e. occurs primarily in skeletal muscle.
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Which one of the following statements concerning gluconeogenesis is correct?
a.
It is inhibited by elevated levels of acetyl CoA.
b.
It occurs in muscle.
c.
It is important in maintaining blood glucose during normal overnight fast.
d.
It is stimulated by fructose 2,6-bisphosphate.
Which of the following concerning glucagon is TRUE?
a.
It is a hormonal protein that uptakes glucose and amino acids from blood.
b.
Its activity is up-regulated when blood glucose increases.
c.
It is a hormonal protein that up-regulates glycogenolysis.
d.
It decreases gluconeogenesis.
Which of the following statements concerning gluconeogenesis is NOT true?
a.
Gluconeogenesis is to make glucose from glycogen.
b.
Many of the reactions of gluconeogenesis are glycolytic reactions going in reverse.
c.
The process of gluconeogenesis consumes ATP.
d.
The process of gluconeogenesis is regulated by ATP.
e.
Gluconeogenesis maintains the blood glucose level long after all dietary glucose has been absorbed and oxidized.
Chapter 46 Solutions
Biology
Ch. 46.2 - Prob. 1CCCh. 46.2 - Prob. 1BCCh. 46.2 - Prob. 2CCCh. 46.3 - Prob. 1CCCh. 46.3 - Can the relationship between body size and...Ch. 46.3 - What observation led to the experiments conducted...Ch. 46.3 - CoreSKILL How did the experimental linking of the...Ch. 46.3 - Prob. 3EQCh. 46.4 - Prob. 1CCCh. 46 - Prob. 1TY
Ch. 46 - Gluconeogenesis a. occurs when the liver...Ch. 46 - Prob. 3TYCh. 46 - Prob. 4TYCh. 46 - Insulin primarily regulates the blood glucose...Ch. 46 - Prob. 6TYCh. 46 - Prob. 7TYCh. 46 - Prob. 8TYCh. 46 - Prob. 9TYCh. 46 - Prob. 10TYCh. 46 - Prob. 1CQCh. 46 - Prob. 2CQCh. 46 - Prob. 3CQCh. 46 - Prob. 1COQCh. 46 - Prob. 2COQ
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- Which of the following statements concerning insulin is NOT true? a. Insulin can increase glycogen synthesis. b. The presence of insulin can increase glucose uptake. c. Insulin can increase the secretion of epinephrine. d. It is secreted by the beta cell of pancreas. e. Glucose in blood can up-regulate the secretion of insulin.arrow_forwardIn the regulation of gluconeogenesis during fasting, which of the following decreases? a. Release of fatty acid from adipose tissue b. Fatty acid oxidation in the liver c. Blood glucose levels d. AcetylCoA in the liverarrow_forwardWhich of the following is true?a. Triglycerides have the least energy content per gram of the three majorenergy sources in the body.b. Fat catabolism generates new triglycerides for storage in adipose tissue.c. By mass, the total-body content of carbohydrates exceeds that of total triglycerides.d. Catabolism of fatty acids occurs in two-carbon steps.e. Triglycerides are the major lipids found in plasma membranesarrow_forward
- Which of the following classes of compounds stimulates the release of insulin from pancreatic β-cells? a. Thiourylenes b. Biguanides c. Progestins d. Sulfonylureas e. α-Glucosides inhibitorsarrow_forwardThe lactate produced by the LDH reaction during anaerobic glycolysis a. Is released to the blood stream and transported to the muscle where it is converted to glucose b. Is released to the blood stream and transported to the liver where it is converted to glucose. c. Is converted to fats via glyconeogensis in the muscle d. All of these answers are correct e. Is converted to glucose via glyconeogensis in the musclearrow_forwardWhen the pancreas releases insulin, it causes a. amino acid uptake in muscle. b. hepatocytes to form glycogen from glucose. c. lipogenesis in adipocytes. d. All of these are correct.arrow_forward
- As you know, the enzymes regulating glycogen metabolism are under strict control. Which compound(s) below is/are likely to serve as a major (direct or indirect) regulator of enzymes involved in glycogen metabolism (pick the BEST answer)? A. AMP B. Glucose 6-phosphate C. Insulin D. Glucagon E. all of the choices presented in this question are correctarrow_forwardAt high energy charge (ATP/AMP ratio) AND low blood glucose levels a. Pyruvate is converted to glucose via gluconeogenesis b. Glycolysis is activated c. Fatty acids are converted to Acetyl-coA d. Gluconeogenesis is inhibitedarrow_forwardUntreated diabetes leads the body to mobilize glucose stores and break down fats. If the issue is that blood glucose is too high, why does this happen? a. Intracellular stores of glucose are very low and the cells feel starved b. All of the above explain why this happens c. Most of the glucose leaves through the kidneys since glucose has exceeded Tmax d. Circulating fat stores are low, which promotes lipolysis e. A lack of insulin results in chronic sympathetic drive, using up all the blood glucosearrow_forward
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