Question :
31.The compound glucose 1-phosphate encountered in which of the following : 1309716
31.The compound glucose 1-phosphate is encountered in which of the following processes?
a.glycogenesis and glycogenolysis
b.glycolysis and gluconeogenesis
c.glycogenesis and gluconeogenesis
d.more than one correct response
e.no correct response
32.The compound glucose 6-phosphate is not encountered in which of the following processes?
a.conversion of pyruvate to glucose
b.conversion to glucose to pyruvate
c.conversion of glycogen to glucose
d.more than one correct response
e.no correct response
33.The compound oxaloacetate is an intermediate in the conversion of
a.glycogen to glucose
b.pyruvate to glucose
c.pyruvate to acetyl CoA
d.more than one correct response
e.no correct response
34.Which of the following is a product of the first stage of the pentose phosphate pathway?
a.carbon dioxide
b.a phosphorylated version of the coenzyme NADH
c.ribose 5-phosphate
d.more than one correct response
e.no correct response
35.Which of the following hormones increases blood glucose levels?
a.insulin and glucagon
b.insulin and epinephrine
c.glucagon and epinephrine
d.more than one correct response
e.no correct response
Use the following to answer the questions below:
In each of the following multiple-choice questions, characterize EACH of the three given statements as being TRUE or FALSE and then indicate the collective true-false status of the statements using the choices:
a) All three statements are true.
b) Two of the three statements are true.
c) Only one of the statements is true.
d) None of the statements is true.
36. Statements:
(1) The three major monosaccharide products from carbohydrate digestion are glucose, galactose, and ribose.
(2) In glycolysis, two ATP molecules are consumed and four ATP molecules are produced.
(3) The Cori cycle is a process in which glucose is converted to pyruvate, which is then converted back to glucose.
a.All three statements are true.
b.Two of the three statements are true.
c.Only one of the statements is true.
d.None of the statements is true.
37.Statements:
(1) Glycogenesis and glycolysis are “opposite” processes.
(2) The focal point for carbohydrate metabolism is the molecule glucose.
(3) Production of 30 ATP molecules accompanies the complete oxidation of a glucose molecule.
a.All three statements are true.
b.Two of the three statements are true.
c.Only one of the statements is true.
d.None of the statements is true.
(1) Absorption of monosaccharides through the intestinal wall into the bloodstream involves passive transport.
(2) In the conversion of pyruvate to acetyl CoA, a carbon dioxide molecule is produced.
(3) Glucose degradation occurs in both glycolysis and the pentose phosphate pathway.
a.All three statements are true.
b.Two of the three statements are true.
c.Only one of the statements is true.
d.None of the statements is true.
39.Statements:
(1) The process of glycolysis converts a C6 molecule into three C2 molecules.
(2) The primary location where gluconeogenesis occurs is the liver.
(3) Pyruvate reduction to lactate occurs under aerobic conditions, and pyruvate oxidation to acetyl CoA results from anaerobic conditions.
a.All three statements are true.
b.Two of the three statements are true.
c.Only one of the statements is true.
d.None of the statements is true.
40.Statements:
(1) Glucose 1-phosphate is an intermediate in both glycogenesis and glycogenolysis.
(2) Conversion of ATP to ADP occurs in both steps one and three of glycolysis.
(3) In the oxidative stage of the pentose phosphate pathway, a hexose phosphate is converted to a pentose phosphate and carbon dioxide.
a.All three statements are true.
b.Two of the three statements are true.
c.Only one of the statements is true.
d.None of the statements is true.
41.Statements:
(1) Gluconeogenesis is a process through which glucose can be synthesized from noncarbohydrate materials.
(2) The process of glycolysis takes place in the cytosol of a cell.
(3) Insulin’s function is to increase blood glucose levels by speeding up the conversion of glycogen to glucose.
a.All three statements are true.
b.Two of the three statements are true.
c.Only one of the statements is true.
d.None of the statements is true.
42. Statements:
(1) All intermediates in the C3 stage of glycolysis are phosphorylated derivatives of either glycerol or acetone.
(2) The digestion of carbohydrates begins in the mouth, continues in the stomach, and is completed in the small intestine.
(3) The storage form for excess glucose in the body is glycogen produced by glycogenesis.
a.All three statements are true.
b.Two of the three statements are true.
c.Only one of the statements is true.
d.None of the statements is true.
43.Statements:
(1) The conversion of glucose 6-phosphate to glucose does not occur in muscle and brain cells.
(2) The two triose phosphates initially formed in glycolysis are dihydroxyacetone phosphate and glyceraldehyde 3-phosphate.
(3) ATP production during glycolysis occurs via substrate-level phosphorylation.
a.All three statements are true.
b.Two of the three statements are true.
c.Only one of the statements is true.
d.None of the statements is true.
44.Statements:
(1) The first step of glycolysis involves the phosphorylation of glucose to produce glucose 1-phosphate.
(2) The processing of one glucose molecule via glycolysis produces two acetyl CoA molecules and two carbon dioxide molecules.
(3) The majority of ATP molecules produced during the complete oxidation of glucose form during the glycolysis phase of oxidation.
a.All three statements are true.
b.Two of the three statements are true.
c.Only one of the statements is true.
d.None of the statements is true.
45.Statements:
(1) Lactate accumulation is the cause of muscle pain and cramping during prolonged, strenuous exercise.
(2) Lactate production during exercise lowers blood pH, which triggers faster breathing.
(3) The effects of both type I and type II diabetes are the same: inadequate glucose uptake by cells.
a.All three statements are true.
b.Two of the three statements are true.
c.Only one of the statements is true.
d.None of the statements is true.
