Chapter 2: Cellular Organelles — Online MCQ Test
BIOTECHNOLOGY · Grade 11 · CBSE(NCERT)
Practice Chapter 2: Cellular Organelles with a free chapter-wise online MCQ test.
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.
Chapter 2: Cellular Organelles — Important Questions & Answers
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.
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.
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.
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.
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.
Nucleus, mitochondria, and chloroplasts all contain DNA, though their roles differ. This is a key feature of these organelles.