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Carbohydrate Online Exam Quiz

Important questions about Carbohydrate. Carbohydrate MCQ questions with answers. Carbohydrate exam questions and answers for students and interviews.

1. A common way that cells capture the energy released during the breakdown of large molecules is to add electrons to smaller, specialized molecules that can accept them. This process of electron acceptance is otherwise known as


A : biosynthesis

B : metabolism

C : reduction

D : catalysis

2. Two major products of pentose phosphate pathway are


A : nicotinamide adenine dinucleotide and ribose 5-phosphate

B : flavine adenine dinuclueotide and glucose 5-phosphate

C : FAD and CoA


3. Gluconeogenesis requires a higher amount of ATP equivalents as compared to that produced by glycolysis because


A : gluconeogenesis releases energy as heat

B : glycolysis releases energy as heat

C : glycolysis occurs in the mitochondria while gluconeogenesis occurs in the cytosol

D : all of the above

4. In lysozyme catalysis, which of the following does not contribute?


A : The abnormally high pK a of Glu35

B : The strained conformation of the D sugar

C : Formation of a covalent intermediate at Asp52

D : Formation of a covalent intermediate at Ser195

5. What is present in the stomach to prevent self-digestion?


A : Mucus

B : acid

C : Enzymes

D : hormones

6. Storage polysaccharide made by animals is


A : amylopectin

B : glycogen

C : cellulose

D : collagen

7. Cellulose fibers resemble with the protein structure in the form of


A : ?-sheets

B : ?-helices

C : ?-turns

D : None of these

8. A catabolic intermediate which stimulates phosphofructokinase would stimulate


A : gluconeogenesis

B : glycolysis

C : glycogen synthesis

D : none of these

9. During vigorous exercise, pyruvate produced by glycolysis is converted to


A : acetate

B : lactate

C : monosodium phosphate

D : pyruvic acid

10. Which of the following can act as precursors for gluconeogenesis?


A : Lactate

B : Glycerol

C : Alanine

D : All of these

1. The cells dependent solely on glucose as an energy source are


A : muscle cells

B : brain cells

C : kidney cells

D : liver cells

2. Hexokinase activity in glycolysis is inhibited by


A : glucose 6- phosphate

B : fructose 6-phosphate

C : fructose 1,6 biphosphate

D : phosphofructokinase

3. Humans are unable to digest


A : starch

B : complex carbohydrates

C : denatured proteins

D : cellulose

4. Saliva contains all of the following except


A : hormones

B : amylase

C : bacteria-killing enzymes

D : antibodies

5. The main site for gluconeogenesis is


A : kidney

B : liver

C : brain

D : muscle

6. Which of the following compounds is responsible for coordinated regulation of glucose and glycogen metabolism?


A : NAD +

B : Fructose 2,6 bisphosphate

C : Acetyl-CoA

D : Fructose 1,6 bisphosphate

7. The NAG6 substrate is hydrolyzed by human lysozyme to form


A : 6 glucosamines + 6 acetic acids

B : NAG 4 + NAG 2

C : NAG 3 + NAG 3

D : NAG 3

8. The conversion of pyruvate to oxaloacetate


A : requires biotin

B : involves the fixation of carbon dioxide

C : occurs in the mitochondria

D : all of the above

9. The glycosidic bond


A : in maltose is not hydrolyzed in lactose intolerant humans

B : in sucrose is hydrolyzed by bees

C : joins glucose and fructose to form sucrose

D : both (b) and (c)

10. Pyruvate is initially converted to which of the following in the gluconeogenesis?


A : Glycerol

B : Phosphoenol pyruvate

C : Oxaloacetate

D : Acetyl CoA

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