Biological Molecules MCQs (PDF Download)

For any future test, are you looking for Biological molecules MCQs in pdf format? You are now on the appropriate page.

The MCQs for biological molecules from the previous six years’ papers are listed in this article along with their PDF answers. Biological molecules MCQs are the most effective for preparing for any competitive exam. Once you have thoroughly reviewed the biological molecules MCQs, you can improve your performance in any next exam.

Candidates should always practice the MCQs for biological molecules when getting ready for the exam. Understanding the MCQs that will be asked in the Biological molecules test is essential.

Biological Molecules MCQs (NTS, PPSC, FPSC)

Q. The area of biology that focuses on understanding chemical elements and how they interact with living things is known as:

A. Chemistry

B. Biochemistry

C. Molecular biology

D. Both a and b

Q. Of the two, which is an organic compound?

A. CO2

B. Water

C. Lipids


Q. Which chemical is present in mammalian and bacterial cells at the same percentage?

A. Water

B. Carbohydrate

C. Proteins

D. Lipids

Q. Which chemical element contributes most to the weight of all mammalian cells?

A. Proteins

B. Carbohydrate

C. Lipids

D. Water

Q. The following terms describe reactions in which simple components are combined to create complex substances:

A. Metabolic reactions

B. Catabolic reactions

C. Anabolic reactions

D. None of these

Q. What is the fundamental component of organic compounds?

A. Oxygen

B. Hydrogen

C. Sulfur

D. Carbon

Q. When two or more atoms share electrons to complete their electron shells, a bond is created that is known as:

A. Ionic bond

B. Hydrogen bond

C. Covalent bond

D. Electrovalent bond

Q. Which bond gives complex carbohydrate molecules their stability?

A. C-H

B. C-O

C. C-C

D. C-N

Q. % of brain cells contain water

A. 20%

B. 80%

C. 85%

D. 90%

Q. Which of the following is true regarding an aqueous medium:

A. Ionic as well as non-ionic substance in aqueous media retains their identity.

B. Enzymes cannot perform catalysis reaction in this medium.

C. Ions and molecules move randomly thus are in a more favorable state to react with other molecules and ions.

D. It is less favorable media for chemical reactions.

Q. Which of the following material is most suited to build biological membranes’ structural components?

A. Hydrophilic Carbohydrates

B. Hydrophobic fats.

C. Both a and b

D. None of these

Q. What is the term for the number of calories needed to increase one gramme of water from 15 to 16 degrees Celsius?

A. Specific Heat of Vaporization
B. Specific Heat capacity
C. Caloric Heat
D. Both A and C

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