Class 9 Biology · Chapter 3 · Test 6

Chapter 3 Board Test

24 MCQs covering the complete chapter, including textbook exercise MCQs, Cell Structure, Organelles, Plant and Animal Cells, Specialized Cells, Division of Labour, and Stem Cells

MCQs

24 questions · 20 min · 24 marks

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Sample questions

The first 5 of 24. Try each one, then tap to see the answer.

Question 1
Which organelle is the main site of cellular respiration?
- AMitochondria
- BRibosomes
- CLysosomes
- DGolgi apparatus
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Answer: A
Mitochondria are the main sites of aerobic cellular respiration and ATP production.
Question 2
Which substance is mainly synthesized by the smooth endoplasmic reticulum?
- ALipids
- BProteins
- CDNA
- DCellulose
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Answer: A
Smooth endoplasmic reticulum is involved in lipid metabolism and synthesis.
Question 3
What are the main components of ribosomes?
- ARNA and protein
- BDNA and lipid
- CCellulose and protein
- DChitin and lipid
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Answer: A
Ribosomes are composed of ribosomal RNA and proteins.
Question 4
What is the primary function of ribosomes?
- AProtein synthesis
- BLipid synthesis
- CWaste removal
- DATP production
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Answer: A
Ribosomes are the sites of protein synthesis.
Question 5
Which organelle modifies and packages proteins received from the rough endoplasmic reticulum?
- AGolgi apparatus
- BLysosome
- CMitochondrion
- DCentriole
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Answer: A
The Golgi apparatus modifies and packages proteins for transport or secretion.

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