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Class 9 Biology Chapter 6: Biomolecules MCQs With Explanations

Practice Class 9 Biology Chapter 6: Biomolecules MCQs with explanations for Pakistani board exams. Includes solved objective questions, answer checking, chapter revision guidance and next chapter suggestions.

MCQs / Class 9 / Biology / Chapter 6: Biomolecules
12 MCQs

Chapter 6: Biomolecules Objective Preparation

Use this page for direct chapter practice, answer checking and explanation review. It is available through the clean URL shown in the browser, so students can bookmark and share this exact chapter.

12Total MCQs
12With explanations
5Topics represented

Topics found: Vitamins, Nucleic Acids, Proteins, Lipids, Carbohydrates

Biomolecules MCQs With Explanations

Q1. Fat soluble vitamin is:
Vitamins A, D, E, and K are all fat-soluble, meaning they dissolve in lipids and are stored in the body's fatty tissues.
Q2. Double helix model of DNA was proposed:
Watson and Crick proposed the double helix model of DNA in 1953 based on X-ray diffraction data from Rosalind Franklin.
Q3. Which one is responsible to carry genetic information from DNA to the ribosomes during protein synthesis:
mRNA carries the genetic code transcribed from DNA to ribosomes, where it is translated into protein.
Q4. Which nitrogenous base is found in RNA but not in DNA:
Uracil replaces thymine in RNA and pairs with adenine, while DNA uses thymine instead of uracil.
Q5. Which components make up a nucleotide:
A nucleotide consists of a pentose sugar, a phosphate group, and a nitrogenous base—this is the standard structural unit of nucleic acids.
Q6. Which of the following is NOT a function of proteins:
Proteins do not carry genetic information; that is the function of nucleic acids (DNA and RNA). Proteins perform transport, digestion, and immune defense roles.
Q7. Which of the following are the units of most lipids:
Most lipids, such as triglycerides and phospholipids, are composed of fatty acids and glycerol as their building blocks.
Q8. Which proteins are involved in difference against pathogens:
Antibodies are immune proteins that recognize and neutralize pathogens like bacteria and viruses.
Q9. Which component of an amino acid determines its unique properties:
The R group (side chain) varies among amino acids and determines their chemical properties and function.
Q10. Which of the following proteins is involved in oxygen transport:
Hemoglobin in red blood cells binds and transports oxygen from the lungs to tissues throughout the body.
Q11. What is true about cellulose:
Cellulose is a structural polysaccharide forming rigid cell walls in plants, providing strength and support.
Q12. How will you differentiate between monosaccharide and polysaccharides:
Monosaccharides are single sugar units, while polysaccharides are long chains of these units.

After Chapter 6: Biomolecules, Practice Next Chapters

Once you finish these MCQs, continue with the next available chapters from Biology so your revision stays chapter-wise and complete.

Chapter 6: Biomolecules Revision Guide

Complete the MCQs first, then review every incorrect answer against the textbook heading where that concept appears. For biology and other science subjects, pay attention to terminology, diagrams, sequence of processes, examples and differences between similar structures or functions.

This chapter page keeps the exact class, subject, chapter, question count, answer checking, explanations and follow-up chapters together, so students can revise from one focused URL instead of searching through the full book again.

Class 9 Biology MCQ Preparation: Biomolecules

This page supports Matric Part 1 practice in Biology. At this stage, the main purpose is building the definitions, symbols, rules and study habits needed for later matric work. The questions available here should be used with the current textbook and the instructions issued by the learner's school or examination board.

What Biology MCQs can test

In Biology, objective questions commonly draw on biological terminology, structures, functions, process sequences, classifications, examples, comparisons and labelled diagrams. A useful answer is based on the exact wording and concept, not simply on recognising a familiar option. For this subject, learners should link each structure with its function and arrange multi-stage processes in the correct biological sequence.

Biomolecules: what to focus on

The elements, bonds, properties and biological roles of carbohydrates, lipids, proteins, nucleic acids, water and other important biomolecules.

Make a comparison table for each biomolecule, including its building units, bond type, examples, functions and common food or laboratory tests before attempting the next question set.

Common mistakes for Class 9 learners

In this subject, frequent errors include interchanging similar terms, skipping a process step, assigning a function to the wrong structure or relying on a diagram without reading its labels. Separate new terms that look similar and connect every formula, rule or definition with at least one textbook example. When the page marks an answer as incorrect, the next step should be to identify the mistaken idea and verify it, rather than memorising the displayed answer letter.

A practical revision routine

Read a small textbook section, answer a focused set of MCQs and correct the underlying idea before starting the next section. Before attempting the MCQs, review key terms, process stages, structure-function relationships, classifications, examples, differences and diagram labels. Complete a manageable set without notes, check the result, and divide errors into missing knowledge, misunderstood concepts and careless reading. Revise the appropriate section before repeating the chapter.

How to review Biomolecules after the quiz

List the questions you missed from Biomolecules and write the textbook heading connected with each one. Explain the correct idea in your own words, then return later and answer a fresh set. This gives the chapter page a clear purpose: finding specific weaknesses in Biology rather than only collecting a score.

Accuracy and responsible use

Explanations are provided where they exist in the question bank, but educational databases can contain incomplete or mistaken material. Confirm disputed answers with an authoritative textbook or teacher. Ahmad Learning Hub provides a practice resource and does not claim that a question will appear in an examination or that every available item represents an official board question.