Question

In metabolizing fructose, liver converts fructose directly to fructose-6-phosphate for glycolysis.                   A. True        &n

  1. In metabolizing fructose, liver converts fructose directly to fructose-6-phosphate for glycolysis.

                  A. True                        B. False

  1. Carbons are incorporated into the glyoxylate cycle from?

                  A. Bicarbonate                        B. Acetyl CoA            C. Malate

  1. At normal situation, when blood glucose reaches 100mg/dl, which of the following events is inhibited in the liver?

                  A. Gluconeogenesis    B. Lipogenesis                        C. Glycogen synthesis          

  1. Which of the following reaction fixes carbon?

                  A. From succinate to fumarate                       B. From pyruvate to Oxaloacetate C. From Pyruvate to Alanine

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Homework Answers

Answer #1

Ans1) B False is correct option.

REASON- In liver fructose is converted to Fructose-1-phosphate by enzyme Fructokinase then enters into glycolysis by enzyme aldolase.

Ans2) B Acetyl CoA is correct option.

REASON - In glyoxylate cycle Acetate ( Acetyl CoA) is converted into 4 carbons .

Ans3) A Gluconeogenesis is correct option.

REASON- Gluconeogenesis is the metabolic process by which glucose is formed from non carbohydrate precursor.So if level of glucose is increased already liver inhibit this process.

Ans4) B option is correct .

REASON- From pyruvate to oxaloacetate is a carbon fixation process.In carbon fixation , carbon dioxide is fixed from being an inorganic molecule to an organic molecule.

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