Biomolecules and Cellular Metabolism Quiz

Test your knowledge of biochemistry with questions on biomolecules, cellular processes, and metabolic pathways. Explore proteins, carbohydrates, lipids, nucleic acids, and more.

#1

Which biomolecule is the main source of energy for cellular processes?

Proteins
Carbohydrates
Lipids
Nucleic acids
2 answered
#2

Which of the following is NOT a function of proteins in the cell?

Enzymatic catalysis
Cell structure and support
Energy storage
Cell signaling
2 answered
#3

Which of the following is a characteristic feature of carbohydrates?

Contain nitrogen atoms
Are insoluble in water
Consist of long chains of amino acids
Have a general formula of (CH2O)n
2 answered
#4

Which enzyme catalyzes the conversion of sucrose into glucose and fructose?

Amylase
Sucrase
Lactase
Maltase
2 answered
#5

Which of the following is NOT a function of lipids in cellular metabolism?

Energy storage
Cell membrane structure
Hormone synthesis
Enzymatic catalysis
1 answered
#6

What is the name of the process by which cells break down glucose in the absence of oxygen to produce energy?

Glycolysis
Krebs cycle
Oxidative phosphorylation
Fermentation
2 answered
#7

What is the primary function of ATP in cellular metabolism?

To store genetic information
To provide structural support to cells
To transfer energy within cells
To catalyze biochemical reactions
2 answered
#8

During glycolysis, glucose is converted into which molecule?

Glucose-6-phosphate
Pyruvate
Acetyl-CoA
Lactate
2 answered
#9

Which organelle is responsible for producing ATP through oxidative phosphorylation?

Endoplasmic reticulum
Golgi apparatus
Mitochondrion
Nucleus
2 answered
#10

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

To produce NADH and FADH2
To generate ATP
To convert pyruvate into acetyl-CoA
To oxidize acetyl-CoA to produce CO2 and high-energy electrons
2 answered
#11

Which of the following is a characteristic of RNA but NOT DNA?

Double-stranded helix structure
Contains uracil nucleotide
Found in the nucleus of eukaryotic cells
Functions as a messenger in protein synthesis
2 answered
#12

Which of the following is NOT a component of an amino acid?

Carboxyl group
Amino group
Phosphate group
Side chain (R-group)
1 answered
#13

What is the function of DNA polymerase in DNA replication?

Unwinds the DNA double helix
Synthesizes new DNA strands
Proofreads and corrects errors in DNA replication
Binds to RNA primer
#14

What is the function of ribosomes in cellular metabolism?

Synthesis of lipids
Production of ATP
Protein synthesis
DNA replication
1 answered
#15

Which of the following is NOT a component of a nucleotide?

Nitrogenous base
Phosphate group
Ribose sugar
Hydrogen atom
1 answered
#16

Which of the following is an example of a secondary structure in proteins?

Alpha helix
Primary structure
Random coil
Unstructured region
1 answered
#17

Which of the following is an example of a reducing sugar?

Glucose
Sucrose
Lactose
Fructose
1 answered
#18

What is the role of phospholipids in cellular metabolism?

Energy storage
Cell membrane structure
Enzymatic catalysis
Hormone synthesis
1 answered
#19

Which of the following is NOT a component of a triglyceride?

Glycerol
Fatty acids
Phosphate group
Ester bonds
1 answered

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