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Exploring Biomolecules and Their Functions

Total questions: 10

Worksheet time: 5mins

Name
Class
Date
1.

Which of the following is a primary function of carbohydrates in living organisms?

a)

Storing genetic information

b)

Providing energy

c)

Catalyzing chemical reactions

d)

Forming cell membranes

2.

What is the basic building block (monomer) of proteins?

a)

Nucleotide

b)

Amino acid

c)

Monosaccharide

d)

Fatty acid

3.

Which biomolecule is primarily responsible for storing and transmitting genetic information?

a)

Lipids

b)

Proteins

c)

Nucleic acids

d)

Carbohydrates

4.

Which of the following best describes the structure of a carbohydrate?

a)

Long chains of amino acids

b)

Chains of nucleotides

c)

Rings or chains of simple sugars

d)

Glycerol and fatty acids

5.

Which type of biomolecule is most important for forming biological membranes?

a)

Carbohydrates

b)

Lipids

c)

Proteins

d)

Nucleic acids

6.

Compare the roles of DNA and RNA in cells.

a)

Both store energy for the cell.

b)

DNA stores genetic information; RNA helps in protein synthesis.

c)

Both are enzymes that speed up reactions.

d)

DNA and RNA both form cell membranes.

7.

Which statement best explains how the structure of carbohydrates relates to their function?

a)

Their ring structure allows them to store genetic information.

b)

Their simple sugar units make them easy to break down for quick energy.

c)

Their long chains make them ideal for forming cell membranes.

d)

Their amino acid composition allows them to catalyze reactions.

8.

How do proteins differ from nucleic acids in their primary function within the cell?

a)

Proteins store genetic information, while nucleic acids catalyze reactions.

b)

Proteins provide structural support and catalyze reactions, while nucleic acids store and transmit genetic information.

c)

Both are used for energy storage.

d)

Both form cell membranes.

9.

A scientist discovers a new molecule in a cell that is made up of a phosphate group, a sugar, and a nitrogenous base. What is the most likely function of this molecule?

a)

Energy storage

b)

Genetic information storage or transfer

c)

Structural support

d)

Catalyzing chemical reactions

10.

Given a model showing a chain of glucose molecules, predict what would happen if an enzyme that breaks down this chain is missing in an organism.

a)

The organism would be unable to store genetic information.

b)

The organism would have difficulty obtaining quick energy from carbohydrates.

c)

The organism would not be able to form cell membranes.

d)

The organism would not be able to synthesize proteins.