Exam 22: Carbohydrate Metabolism

Instructions: Consider the reaction below to answer the following question(s). -Refer to instructions.This reaction proceeds through a common enol structure.Draw the structure of the glucose/fructose enol.

If gluconeogenesis were the exact reverse of glycolysis,which of the following would not be possible?

Circle the carbon atoms in the molecule of glucose shown that enter the citric acid cycle as -CH₃ groups.

The first reaction of gluconeogenesis is This reaction is classified as:

Which enzyme catalyzes the reaction shown?

The following reactions all occur during oxidative decarboxylation of pyruvate,except:

Which group of small molecules best fit the boxes associated with the reaction shown? A b

When acetyl-CoA reacts with oxaloacetate to form citrate

Which enzymes in the citric acid cycle catalyze oxidative decarboxylation reactions?

The citric acid cycle is considered to be the central metabolic pathway for all the following reasons,except:

Consider the structure of amylopectin below to answer the following questions. a) Circle the glycosidic links that are hydrolyzed in the small intestine. b) What is the final product of complete hydrolysis of amylpectin?

The citric acid cycle is linked to the electron transport chain via:

Which of the following types of reactions are involved in glycolysis? Select all that apply.

During the complete catabolism of a molecule of glucose,the ultimate fate of the carbon atoms are

Which group of small molecules best fit the boxes associated with the reaction shown? A b c

Which group of small molecules best fit the boxes associated with the reaction shown? A b

At the beginning of polysaccharide catabolism,a-amylase catalyzes:

Biotin is important in gluconeogenesis for all of these reasons,except:

Thiamin diphosphate (TPP)is a coenzyme

In the reaction catalyzed by aldolase,the substrate is bound to the enzyme