Which of the following is incorrect about glycogen synthesis? O a. The addition of glucose is catalyzed by glycogen synthase O b. It is not regulated O c. It requires UTP O d. It starts with glucose-6-phsophate
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- What is the first step in glycogen degradation? a) remodeling of the glycogen substrate b) activation of the T state of phosphorylase b c) release of glucose 1-phosphate from glycogen d) formation of glucose 6-phosphate from glucose 1-phosphate e) isomerization of glucose 1-phosphate to glucose 6-phosphate1) Gluconeogenesis refers to ________. A) the breakdown of glycogen B) the formation of glucose from noncarbohydrate sources C) the formation of glycogen. D) splitting of glucose to pyruvate E) fermentation of glucose to ethanol 3) Glycogenesis refers to ________. A) the breakdown of glycogen B) the formation of glucose from noncarbohydrate sources C) the formation of glycogen D) splitting of glucose to pyruvate E) fermentation of glucose to ethanol 3) Ketosis is a condition that can occur if A) ketone bodies instead of glucose are used for energy. B) too many ketones are ingested. C) too much protein is available in the diet. D) the brain is starved of glucose. E) low fat intake occurs.It is noticed that when a strain of mice exercises, their blood glucose drops to very low levels. Which of the following can explain this situation? a) These mice do not make enough insulin b) these mice lack insulin receptors on their cells c)these mice lack glucagon d) these mice cannot synthesize glycogen from glucose
- Glycolysisa. is the breakdown of glucose to two pyruvate molecules.b. requires the input of two ATP molecules.c. produces two NADH molecules.d. does not require O2.e. All of these are correct.In muscle, glycogen phosphorylase is stimulated (activated) by a. Glucose b. AMP c. Glucose 6-phosphate d. ATPWhen unlimited energy (glucose = 100 and fat = 100) is available and pyruvate processing is inhibited (100%), the citric acid cycle (CAC) runs at a _________ rate. a, Low (1 - 30%) b, Stops (1% or less) c, Moderate (31 - 70%) d, High (71 - 100%)
- In the glycogen synthase reaction, the precursor to glycogen is a. Glucose-1-P b. UDP-glucose c. UTP-glucose d. Glucose-6-PName a pathway in muscles tissue that you would expect is enhanced (or upregulated) by the presence of adrenaline (aka epinephrine) in your veins (and arteries). a) glycogen breakdown b) glycolysis c) citric acid cycle/Kreb's cycle d) lipid synthesis e) beta oxidationWhich of the following choices describes a likely metabolic consequence of thiamin deficiency in animals. Select one: a. Increased gas production in the rumen b. Impaired vision c. Decreased ATP synthesis d. Increased osmotic water influx into the lumen of the small intestine e. Increased serum cholesterol in the blood
- Which of the following would contribute to “glycogen sparing/preservation” during prolonged exercise? a. Dietary consumption of glucose during the exercise bout b. Cori cycle c. An increase in the number of mitochondria in the skeletal muscle d. All of the above e. Only B and C are correctIn which step of glycerol metabolism does each of the following events occur? a. The oxidizing agent NAD1 is needed. b. ADp is produced. c. Glycerol 3-phosphate is a reactant. d. A secondary alcohol group is oxidized.If PFK is activated in the liver, which of the following statements would be false? a) There are high levels of fructose 2,6 bisphosphate b) PFK is in the R-state c) Glycolysis would be activated d) AMP levels are low e) Gluconeogenesis is inhibited in the liver