cell: the building block of life chapter 2

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MCQ Science Class 9
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Science Class 9

Cell: The Building Block of Life Chapter 2

CBSE Board

Teacher Name : Rakesh
Total Questions : 18
Time Allowed : 60
Total Marks : 18

Q 1 :What is the primary function of chloroplasts?
- Photosynthesis
- Energy production
- Cell division
- Storage
Q 2 :Which of the following is NOT a function of the cell membrane?
- Energy production
- Selective permeability
- Communication
- Protection
Q 3 :What is the main function of the cell wall?
- To provide support and protection to the cell
- To control cell activities
- To synthesize proteins
- To produce energy
Q 4 :Which plastid is mainly responsible for food synthesis in plant cells?
- Amyloplast
- Chloroplast
- Chromoplast
- Leucoplast
Q 5 :What is the main advantage of having organelles in eukaryotic cells?
- All functions occur in one place
- No need for enzymes
- Cells become invisible
- Specialized compartments perform specific functions
Q 6 :Thermophiles are organisms that mainly live in:
- Extremely hot environments like hot springs
- Very cold environments like glaciers
- Dry deserts only
- Deep oceans with no oxygen
Q 7 :Which of the following is a characteristic of prokaryotic cells?
- Lack a nucleus
- Have membrane-bound organelles
- Contain multiple chromosomes
- Are larger than eukaryotic cells
Q 8 :Which organelle is known as the powerhouse of the cell?
- Nucleus
- Golgi apparatus
- Endoplasmic reticulum
- Mitochondria
Q 9 :Why do eukaryotic cells require membrane-bound organelles?
- To divide work and increase efficiency
- To reduce the number of reactions
- To make the cell larger
- To store only water
Q 10 :What is the function of mitochondria?
- Energy production
- Photosynthesis
- Protein synthesis
- Storage of nutrients
Q 11 :The cell wall is best described as:
- The outer rigid covering of plant cells
- A flexible inner layer of the cell
- A structure found only in animal cells
- A part of the nucleus
Q 12 :What is the main role of vacuoles in plant cells?
- Photosynthesis
- Protein synthesis
- Storage and rigidity
- Energy production
Q 13 :Which cell structure is involved in detoxifying harmful substances?
- Smooth endoplasmic reticulum
- Rough endoplasmic reticulum
- Mitochondria
- Nucleus
Q 14 :What is the primary role of the nucleus in a cell?
- Storage of waste
- Energy production
- Controls activities
- Protein synthesis
Q 15 :Which statement about plastids is correct?
- They do not contain any pigments
- They are found only in animal cells
- They are present only in roots
- They help in photosynthesis, storage, and coloration
Q 16 :Plastids other than chloroplasts are mainly involved in:
- Protein synthesis
- Cell division
- Respiration
- Storage and pigmentation
Q 17 :What is the limit of resolution of a microscope?
- The smallest distance between two points that can be seen separately
- The size of the lens
- The ability to magnify an object
- The brightness of the image
Q 18 :What is the primary function of ribosomes?
- Energy production
- Protein synthesis
- Photosynthesis
- Cell division

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