Biology
5th Edition
ISBN: 9781260487947
Author: BROOKER
Publisher: MCG
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Textbook Question
Chapter 47, 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 about the integration of fat and carbohydrate metabolism control is correct?
a.
High insulin/glucagon ratio activates lipolysis in muscle
b.
High insulin/glucagon ratio inhibits lipogenesis in liver.
c.
Low insulin/glucagon ratio activates lipolysis in adipocytes.
d.
Insulin-dependent glucose transporters are recruited to their functional membrane site when insulin levels are low
Chapter 47 Solutions
Biology
Ch. 47.2 - Prob. 1CSCh. 47.2 - Prob. 2CSCh. 47.3 - Can the relationship between body size and...Ch. 47.3 - What observation led to the experiments conducted...Ch. 47.3 - CoreSKILL How did the experimental linking of the...Ch. 47.3 - Prob. 3EQCh. 47.4 - Prob. 1CCCh. 47 - Prob. 1TYCh. 47 - Gluconeogenesis a. occurs when the liver...Ch. 47 - Prob. 3TY
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- 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.arrow_forwardWhich of the following statements about insulin is true? a. Insulin acts as a transport protein, cany in g glucose across the cell membrane. b. Insulin facilitates the movement of inti acellular glucose transporters to the cell membrane. c. Insulin stimulates the breakdown of stored glycogen into glucose. d. Insulin stimulates the kidneys to reabsorb glucose into the bloodstream.arrow_forwardWhich of the following statements regarding glycogen are true? A. Glucose from glycogen can be metabolized anaerobically B. Approximately 1-2% of muscle weight is glycogen, whereas 10-15% of liver weight is glycogen C. It is faster for the muscle to obtain energy from glycogen than from lipids D. A and B are true E. B and C are true F. Both A, B, and C are truearrow_forward
- In 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 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_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
- The 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_forwardWhich 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_forwardAs 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_forward
- When 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_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_forwardA young child who presents with otherwise normal development has persistent diarrhea, vomiting, and abdominal pain after eating. A dairy elimination diet was attempted without successful relief. After feeding with sucrose, the level of glucose in the blood barely increased. Using your knowledge of metabolism and enzymes consider, how might this be possible? a. deficiency of salivary amylase b. hereditary lactase deficiency c. secondary lactase deficiency d. hereditary insufficiency of sucrase e. disorders of transportersarrow_forward
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