Chapter Exam

Chapter 2: Cellular Organelles — Online MCQ Test

Q: Which organelle is known as the 'powerhouse of the cell'?

Answer: B. Mitochondrion — Mitochondria produce ATP through cellular respiration, so they are called the powerhouse of the cell.

Q: Ribosomes are the site of synthesis of:

Answer: B. Proteins — Ribosomes translate mRNA and assemble amino acids into proteins.

Q: In plant cells, chloroplasts are mainly responsible for:

Answer: B. Photosynthesis — Chloroplasts contain chlorophyll and carry out photosynthesis.

Q: A student observes a cell with many mitochondria and active energy use. Which conclusion is most appropriate?

Answer: B. The cell has high ATP demand — Cells with high energy requirements generally contain many mitochondria to meet ATP demand.

Q: Which statement about nucleus, mitochondria, and chloroplasts is correct?

Answer: B. All three contain their own genetic material — Nucleus, mitochondria, and chloroplasts all contain DNA, though their roles differ. This is a key feature of these organelles.

BIOTECHNOLOGY · Grade 11 · CBSE(NCERT)

Practice Chapter 2: Cellular Organelles with a free chapter-wise online MCQ test for CBSE(NCERT) Grade 11 BIOTECHNOLOGY. This chapter covers: Cell organelles nucleus mitochondria chloroplast ribosomes endoplasmic reticulum Golgi apparatus lysosomes cell structure organelle functions cellular organization homeostasis. AI-generated questions from basic to board-exam level, with instant results and explanations.

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Chapter 2: Cellular Organelles — Important Questions & Answers (FAQ)

Frequently asked questions from CBSE(NCERT) Grade 11 BIOTECHNOLOGY — Chapter 2: Cellular Organelles, with answers and explanations. These are sample questions; the exam has its own separate question set.

Which organelle is known as the 'powerhouse of the cell'?

A. Nucleus
B. Mitochondrion ✓
C. Golgi apparatus
D. Ribosome

Answer: B. Mitochondrion
Mitochondria produce ATP through cellular respiration, so they are called the powerhouse of the cell.

Ribosomes are the site of synthesis of:

A. Lipids
B. Proteins ✓
C. Carbohydrates
D. Nucleic acids

Answer: B. Proteins
Ribosomes translate mRNA and assemble amino acids into proteins.

In plant cells, chloroplasts are mainly responsible for:

A. Respiration
B. Photosynthesis ✓
C. Protein synthesis
D. Waste digestion

Answer: B. Photosynthesis
Chloroplasts contain chlorophyll and carry out photosynthesis.

A student observes a cell with many mitochondria and active energy use. Which conclusion is most appropriate?

A. The cell is likely storing water
B. The cell has high ATP demand ✓
C. The cell is unable to respire
D. The cell lacks enzymes

Answer: B. The cell has high ATP demand
Cells with high energy requirements generally contain many mitochondria to meet ATP demand.

Which statement about nucleus, mitochondria, and chloroplasts is correct?

A. All three are found in every cell type
B. All three contain their own genetic material ✓
C. Only the nucleus is membrane-bound
D. Only chloroplasts are involved in ATP production

Answer: B. All three contain their own genetic material
Nucleus, mitochondria, and chloroplasts all contain DNA, though their roles differ. This is a key feature of these organelles.

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Chapter 3: Biomolecules