Sample Quizzes For Preparation: Cells
Q1.
Which organelle is responsible for producing energy in the form of ATP through aerobic respiration?
A) Ribosome
B) Nucleus
C) Mitochondrion
D) Vacuole
Q2.
Which of the following structures is present in plant and bacterial cells but absent in animal cells?
A) Nucleus
B) Ribosomes
C) Cell membrane
D) Cell wall
Q3.
What is the main function of ribosomes in all cells?
A) DNA replication
B) Protein synthesis
C) Energy storage
D) Cell wall formation
Q4.
Which structure is found in bacterial cells but not in plant or animal cells?
A) Mitochondria
B) Circular DNA
C) Chloroplasts
D) Nucleus
Q5.
A student draws a cell 100 mm long under the microscope. If the actual size of the cell is 50 µm, what is the magnification?
A) 50×
B) 500×
C) 1000×
D) 2000×
Q6.
Which specialised cell has no nucleus and is adapted to carry oxygen efficiently?
A) White blood cell
B) Red blood cell
C) Root hair cell
D) Muscle cell
Q7.
Which of the following correctly matches the organelle with its function?
A) Vacuole – protein synthesis
B) Nucleus – aerobic respiration
C) Chloroplast – photosynthesis
D) Mitochondrion – control center of the cell
Q8.
Which of the following statements about plasmids is correct?
A) They are found in animal cells.
B) They carry essential genes for survival.
C) They are involved in aerobic respiration.
D) They can carry genes for antibiotic resistance.
Q9.
Which cell type is adapted for absorption and has a large surface area due to an extension?
A) Xylem cell
B) Muscle cell
C) Root hair cell
D) Ciliated cell
Q10.
In a plant cell, which structure stores water, waste, and maintains turgor pressure?
A) Chloroplast
B) Nucleus
C) Cell membrane
D) Vacuole
Q11.
Which structure controls what enters and exits the cell?
A) Nucleus
B) Cell wall
C) Cell membrane
D) Cytoplasm
Q12.
Which structure provides rigid support and prevents the cell from bursting?
A) Cytoplasm
B) Cell membrane
C) Chloroplast
D) Cell wall
Q13.
Where is genetic material stored in animal and plant cells?
A) Chloroplast
B) Cytoplasm
C) Mitochondria
D) Nucleus
Q14.
Which of the following is not found in bacterial cells?
A) Circular DNA
B) Cell wall
C) Mitochondria
D) Ribosomes
Q15.
Which cell component is found in all cell types (animal, plant, and bacterial)?
A) Nucleus
B) Mitochondria
C) Ribosomes
D) Vacuole
Q16.
What is the main function of the cytoplasm?
A) Controls cell division
B) Stores cell sap
C) Supports the cell shape
D) Site of metabolic reactions
Q17.
Which of the following organelles is only found in green plant cells?
A) Mitochondria
B) Chloroplasts
C) Nucleus
D) Cell membrane
Q18.
Which specialised cell is adapted for movement and fertilisation?
A) Xylem vessel
B) Root hair cell
C) Sperm cell
D) Red blood cell
Q19.
Which of the following is a function of the large central vacuole in plant cells?
A) Protein synthesis
B) Controlling respiration
C) Maintaining cell shape
D) Photosynthesis
Q20.
Which of the following structures allows plant cells to photosynthesise?
A) Cell wall
B) Chloroplast
C) Ribosome
D) Vacuole
Q21.
Which of the following correctly shows the order of organisation in a multicellular organism?
A) Cell → Organ → Tissue → Organ system
B) Cell → Tissue → Organ → Organism
C) Tissue → Cell → Organ → Organism
D) Organ → Organ system → Cell → Tissue
Q22.
A prokaryotic cell differs from a eukaryotic cell because it:
A) Has ribosomes
B) Contains mitochondria
C) Has no nucleus
D) Has a cellulose cell wall
Q23.
Which organelle is most directly involved in controlling cell activities?
A) Nucleus
B) Ribosome
C) Mitochondrion
D) Cell wall
Q24.
Which specialised cell contains tiny hair-like projections used to move mucus?
A) Muscle cell
B) Ciliated epithelial cell
C) Red blood cell
D) Egg cell
Q25.
Which organelle is most numerous in muscle cells due to their high energy demand?
A) Ribosomes
B) Nucleus
C) Mitochondria
D) Vacuoles
Q26.
What is the term for the jelly-like substance where most chemical reactions take place?
A) Cytoplasm
B) Nucleoplasm
C) Vacuole
D) Ribosome
Q27.
Which part of the cell regulates the passage of substances in and out?
A) Cytoplasm
B) Mitochondria
C) Cell membrane
D) Nucleus
Q28.
What is a plasmid?
A) A type of ribosome
B) A circular DNA found in plant cells
C) Extra DNA found in bacteria
D) Part of the bacterial cell wall
Q29.
Which structure is responsible for photosynthesis?
A) Ribosome
B) Vacuole
C) Mitochondrion
D) Chloroplast
Q30.
Which of these is the correct formula to calculate magnification?
A) Magnification = actual size / image size
B) Magnification = image size / actual size
C) Magnification = image size × actual size
D) Magnification = actual size – image size
Answers and Explanations
Q1 – C
Mitochondria produce ATP during aerobic respiration. Ribosomes produce proteins, the nucleus controls cell activity, and vacuoles store substances.
Q2 – D
Cell walls are present in plant and bacterial cells, not animal cells. All other options are present in all three types.
Q3 – B
Ribosomes synthesize proteins. DNA replication happens in the nucleus; ribosomes are not used for energy storage or building cell walls.
Q4 – B
Circular DNA is unique to prokaryotes (bacteria). Mitochondria, nucleus, and chloroplasts are only found in eukaryotes.
Q5 – D
Image size = 100 mm = 100,000 µm. 100,000 ÷ 50 = 2000× magnification.
Q6 – B
Red blood cells have no nucleus to carry more haemoglobin. White blood cells and muscle cells have nuclei; root hair cells absorb water.
Q7 – C
Chloroplasts carry out photosynthesis. Vacuoles do not make proteins. The nucleus doesn’t perform respiration.
Q8 – D
Plasmids in bacteria often carry resistance genes. They aren’t found in animal cells, don’t handle respiration, and aren’t essential.
Q9 – C
Root hair cells have long projections for maximum surface area for absorption.
Q10 – D
The vacuole stores water, waste, and provides turgor pressure. Chloroplasts photosynthesize, not store.
Q11 – C
The cell membrane controls movement. The wall provides support, not regulation.
Q12 – D
The cell wall maintains rigidity and prevents bursting. Membranes are flexible, and chloroplasts do not offer structural support.
Q13 – D
Nucleus stores DNA. Mitochondria make energy, cytoplasm is for reactions, and chloroplasts store pigments.
Q14 – C
Mitochondria are absent in bacteria. Ribosomes, walls, and DNA are present.
Q15 – C
Ribosomes are found in all cells. Nucleus and mitochondria are absent in bacteria. Vacuoles are not found in bacteria or animal cells.
Q16 – D
Cytoplasm supports reactions. Division control is by the nucleus.
Q17 – B
Only green plants have chloroplasts. The others are present in both animals and plants.
Q18 – C
Sperm cells have a tail and enzymes to penetrate the egg. Xylem and root cells do not move.
Q19 – C
The vacuole helps maintain cell shape via turgor pressure. It does not control respiration or photosynthesis.
Q20 – B
Chloroplasts are the site of photosynthesis.
Q21 – B
Correct biological order is cell → tissue → organ → organism.
Q22 – C
Prokaryotes lack a nucleus. They do have ribosomes but no mitochondria or cellulose walls.
Q23 – A
The nucleus controls the cell. The others have support or metabolic functions.
Q24 – B
Ciliated epithelial cells move mucus. Muscle contracts, egg fertilises, RBC transports oxygen.
Q25 – C
Muscle cells use a lot of energy, so they contain many mitochondria.
Q26 – A
Cytoplasm is the site of metabolic reactions.
Q27 – C
Cell membrane regulates entry and exit.
Q28 – C
Plasmids are extra DNA in bacteria.
Q29 – D
Photosynthesis happens in chloroplasts.
Q30 – B
Magnification = image size ÷ actual size.