Overview of Metabolism: Interactive Learning Quizzes for Biotechnology Students

Question 1

Which of the following is a major product of glycolysis?

Accepted Answer

Pyruvate

Answer

Glucose

Answer

Glucose-6-phosphate

Answer

Acetyl-CoA

Question 2

What enzyme is responsible for catalyzing the conversion of pyruvate to acetyl-CoA?

Accepted Answer

Pyruvate dehydrogenase

Answer

Pyruvate kinase

Answer

Citrate synthase

Answer

Isocitrate dehydrogenase

Question 3

Which of the following intermediates is NOT involved in the citric acid cycle?

Accepted Answer

Phosphoenolpyruvate

Answer

Malate

Answer

Succinyl-CoA

Answer

Fumarate

Question 4

Which of the following processes involves the synthesis of cellular components?

Accepted Answer

Anabolism

Answer

Catabolism

Answer

Glycolysis

Answer

Gluconeogenesis

Question 5

What is the primary storage form of glucose in the human body?

Accepted Answer

Glycogen

Answer

Starch

Answer

Fructose

Answer

Cellulose

Question 6

Which hormone stimulates the breakdown of glycogen in the liver?

Accepted Answer

Glucagon

Answer

Insulin

Answer

Testosterone

Answer

Estrogen

Question 7

What is the primary function of the pentose phosphate pathway?

Accepted Answer

Synthesis of ribose-5-phosphate

Answer

Generation of ATP

Answer

Breakdown of lipids

Answer

Regulation of protein synthesis

Question 8

Which molecule is the universal energy currency used by cells for energy exchange?

Accepted Answer

ATP

Answer

Glucose

Answer

ADP

Answer

NADH

Question 9

Which of the following is NOT a product of the citric acid cycle?

Accepted Answer

Glucose

Answer

NADH

Answer

FADH2

Answer

CO2

Question 10

What type of chemical reaction involves the synthesis of macromolecules from smaller molecules?

Accepted Answer

Condensation reaction

Answer

Hydrolysis reaction

Answer

Oxidation reaction

Answer

Reduction reaction

Question 11

What is the ultimate electron acceptor in the electron transport chain?

Accepted Answer

Oxygen

Answer

Hydrogen

Answer

Carbon dioxide

Answer

Water

Question 12

Which organ serves as the primary site for gluconeogenesis, lipogenesis, and detoxification?

Accepted Answer

Liver

Answer

Pancreas

Answer

Kidney

Answer

Muscle

Question 13

Where in the cell does the citric acid cycle take place?

Accepted Answer

Mitochondria

Answer

Cytoplasm

Answer

Nucleus

Answer

Golgi apparatus

Question 14

What is the main function of the pentose phosphate pathway?

Accepted Answer

Production of NADPH and pentose sugars

Answer

Oxidation of fatty acids

Answer

Synthesis of amino acids

Answer

Breakdown of glucose to pyruvate

Question 15

Which class of biomolecules serves as the primary energy source for living organisms?

Accepted Answer

Carbohydrates

Answer

Lipids

Answer

Proteins

Answer

Nucleic acids

Question 16

Which metabolic pathway involves the breakdown of complex molecules into simpler ones, releasing energy in the process?

Accepted Answer

Catabolism

Answer

Anabolism

Answer

Glycogenesis

Answer

Glycolysis

Question 17

In glycolysis, which enzyme catalyzes the conversion of glucose-6-phosphate to fructose-6-phosphate?

Accepted Answer

Glucose-6-phosphate isomerase

Answer

Hexokinase

Answer

Glucokinase

Answer

Phosphofructokinase

Question 18

Which metabolic pathway generates the majority of ATP in a cell?

Accepted Answer

Oxidative phosphorylation

Answer

Citric acid cycle

Answer

Glycolysis

Answer

Pentose phosphate pathway

Question 19

What is the primary function of the citric acid cycle (Krebs cycle)?

Accepted Answer

Generating NADH and FADH2

Answer

Producing ATP

Answer

Releasing carbon dioxide

Answer

Synthesizing amino acids

Question 20

Which molecule serves as a precursor for synthesizing both DNA and RNA?

Accepted Answer

Ribose-5-phosphate

Answer

Glucose-6-phosphate

Answer

Fructose-6-phosphate

Answer

Glyceraldehyde-3-phosphate

Question 21

Which metabolic disorder is characterized by an inability to metabolize lactose?

Accepted Answer

Lactose intolerance

Answer

Diabetes mellitus

Answer

Phenylketonuria

Answer

Sickle cell anemia

Question 22

**Define metabolism.**

Accepted Answer

The sum of all chemical reactions that occur within an organism

Answer

The synthesis of proteins

Answer

The process by which cells divide

Question 23

**What is the primary purpose of catabolism?**

Accepted Answer

To break down complex molecules into simpler ones

Answer

To regulate cell growth

Answer

To synthesize complex molecules from simpler ones

Answer

To transport substances across cell membranes

Question 24

**Identify an example of an anabolic reaction.**

Accepted Answer

The synthesis of proteins

Answer

Glycolysis

Answer

The citric acid cycle

Answer

The electron transport chain

Question 25

**What is the primary function of enzymes in metabolism?**

Accepted Answer

To catalyze chemical reactions

Answer

To regulate gene expression

Answer

To transport molecules across cell membranes

Answer

To synthesize new molecules

Question 26

**Identify the primary energy currency of cells.**

Accepted Answer

ATP

Answer

GTP

Answer

ADP

Answer

UTP

Question 27

**What is the end product of anaerobic glycolysis?**

Accepted Answer

Lactic acid

Answer

Pyruvate

Answer

Acetyl CoA

Answer

CO2

Question 28

**Identify the metabolic disorder characterized by elevated blood glucose levels.**

Accepted Answer

Diabetes mellitus

Answer

Hyperthyroidism

Answer

Hypoglycemia

Answer

Adrenal insufficiency