20 Most Important MCQs on topic "Cell: The Unit of Life"
Here we will learn 100 MCQs on the topic "Cell – the Unit of Life," designed for different competitive exams like RRB NTPC, SSC CGL, SSC CHSL, SSC GD, WBCS, Clerkship and Miscellaneous etc. along with the correct answers.
Topic: Cell: The Unit of Life
We will distribute these 100 MCQs in five parts. Out of five parts of 100 MCQs on the topic "Cell: the Unit of Life," this is Part: 02.
[Part: 02]
Question Zone:
21. What is the role of the vacuole in a plant cell?
A) Photosynthesis
B) Storing nutrients and waste products
C) DNA replication
D) Protein synthesis
22. What are the proteins that speed up chemical reactions in the cell called?
A) Hormones
B) Enzymes
C) Antibodies
D) Lipids
23. Which type of cell lacks a membrane-bound nucleus?
A) Prokaryotic
B) Eukaryotic
C) Plant cell
D) Fungal cell
24. Which of the following is responsible for the detoxification of drugs and poisons in the liver cells?
A) Golgi apparatus
B) Smooth endoplasmic reticulum
C) Ribosomes
D) Mitochondria
25. Which part of the cell is responsible for maintaining its shape?
A) Cell membrane
B) Cell wall
C) Cytoskeleton
D) Nucleus
26. Which of the following organelles contains digestive enzymes?
A) Lysosome
B) Ribosome
C) Golgi body
D) Endoplasmic reticulum
27. Which cell organelle is also called the "control center" of the cell?
A) Mitochondria
B) Nucleus
C) Ribosome
D) Chloroplast
28. Which component of the cell membrane is responsible for its fluidity?
A) Proteins
B) Carbohydrates
C) Phospholipids
D) Nucleic acids
29. Chromosomes are composed mainly of:
A) Proteins and lipids
B) DNA and proteins
C) RNA and lipids
D) Carbohydrates and proteins
30. The process of programmed cell death is called:
A) Apoptosis
B) Necrosis
C) Mitosis
D) Meiosis
31. What do you call the folds of the inner membrane of the mitochondria?
A) Cristae
B) Matrix
C) Grana
D) Thylakoid
32. The green pigment in plants responsible for trapping light energy is:
A) Carotene
B) Xanthophyll
C) Chlorophyll
D) Anthocyanin
33. Cells that do not divide anymore are said to be in which phase of the cell cycle?
A) G1 phase
B) G2 phase
C) S phase
D) G0 phase
34. What is the function of the ribosome?
A) Lipid synthesis
B) Protein synthesis
C) Photosynthesis
D) Cellular respiration
35. DNA replication takes place during which phase of the cell cycle?
A) G1 phase
B) G2 phase
C) S phase
D) M phase
36. Which organelle is involved in the synthesis of ATP?
A) Ribosomes
B) Golgi apparatus
C) Mitochondria
D) Nucleus
37. What structure is found within the nucleus and is responsible for the production of ribosomes?
A) Chromatin
B) Nucleolus
C) Nuclear membrane
D) Centriole
38. Which cell organelle is responsible for detoxifying harmful substances?
A) Mitochondria
B) Peroxisomes
C) Golgi apparatus
D) Lysosomes
39. The fluid inside the mitochondria is known as:
A) Matrix
B) Cristae
C) Stroma
D) Thylakoid
40. The organelles responsible for movement in some cells are:
A) Ribosomes
B) Cilia and flagella
C) Lysosome
D) Vacuoles
Answer Zone:
22. B) Enzymes
23. A) Prokaryotic
24. B) Smooth endoplasmic reticulum
25. C) Cytoskeleton
26. A) Lysosome
27. B) Nucleus
28. C) Phospholipids
29. B) DNA and proteins
30. A) Apoptosis
31. A) Cristae
32. C) Chlorophyll
33. D) G0 phase
34. B) Protein synthesis
35. C) S phase
36. C) Mitochondria
37. B) Nucleolus
38. B) Peroxisomes
39. A) Matrix
40. B) Cilia and flagella