20 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: 04.
[Part: 04]
61. The smooth endoplasmic reticulum is responsible for:
A) Protein synthesis
B) DNA replication
C) Lipid metabolism
D) Photosynthesis
Answer: C) Lipid metabolism
62. The space between the outer and inner membranes of mitochondria is called:
A) Cristae
B) Matrix
C) Intermembrane space
D) Thylakoid
Answer: C) Intermembrane space
63. Which of the following cell organelles is involved in energy production?
A) Nucleus
B) Ribosomes
C) Mitochondria
D) Golgi apparatus
Answer: C) Mitochondria
64. The folded inner membrane of a chloroplast is called:
A) Cristae
B) Stroma
C) Grana
D) Thylakoid
Answer: D) Thylakoid
65. The gel-like substance inside the cell where organelles are suspended is called:
A) Plasma membrane
B) Cytosol
C) Nucleoplasm
D) Chromatin
Answer: B) Cytosol
66. The process by which vesicles release their contents outside the cell is called:
A) Endocytosis
B) Exocytosis
C) Phagocytosis
D) Pinocytosis
Answer: B) Exocytosis
67. The double membrane surrounding the nucleus is called:
A) Nuclear envelope
B) Cell membrane
C) Nuclear pore
D) Cell wall
Answer: A) Nuclear envelope
68. Which part of the cell is responsible for packaging proteins into vesicles?
A) Lysosomes
B) Ribosomes
C) Golgi apparatus
D) Nucleus
Answer: C) Golgi apparatus
69. The primary function of peroxisomes is:
A) Energy production
B) Detoxification
C) Protein synthesis
D) Photosynthesis
Answer: B) Detoxification
70. What is the name of the complex of DNA and proteins that forms chromosomes during cell division?
A) Chromatin
B) Centriole
C) Ribosome
D) Centromere
Answer: A) Chromatin
71. Which of the following organelles helps in cell division?
A) Nucleolus
B) Lysosomes
C) Centrioles
D) Endoplasmic reticulum
Answer: C) Centrioles
72. The organelle responsible for producing ribosomes is:
A) Nucleus
B) Golgi apparatus
C) Mitochondria
D) Nucleolus
Answer: D) Nucleolus
73. In plant cells, the large central vacuole is responsible for:
A) Protein synthesis
B) Storing water and waste
C) Cellular respiration
D) Photosynthesis
Answer: B) Storing water and waste
74. The outermost layer of a plant cell is:
A) Plasma membrane
B) Cell wall
C) Cytoplasm
D) Nucleus
Answer: B) Cell wall
75. Which structure is responsible for controlling the passage of materials in and out of the cell?
A) Plasma membrane
B) Golgi apparatus
C) Nucleus
D) Cytoskeleton
Answer: A) Plasma membrane
76. Which organelle is known as the 'protein factory' of the cell?
A) Mitochondria
B) Lysosome
C) Ribosome
D) Golgi apparatus
Answer: C) Ribosome
77. What is the function of plasmodesmata in plant cells?
A) Photosynthesis
B) Protein synthesis
C) Intercellular communication
D) Cellular respiration
Answer: C) Intercellular communication
78. Which organelle is responsible for the synthesis of secretory and membrane-bound proteins?
A) Golgi apparatus
B) Smooth endoplasmic reticulum
C) Rough endoplasmic reticulum
D) Lysosomes
Answer: C) Rough endoplasmic reticulum
79. The part of the cell responsible for cellular respiration is:
A) Nucleus
B) Ribosome
C) Mitochondria
D) Golgi body
Answer: C) Mitochondria
80. What is the function of the cell wall in plant cells?
A) Transport of molecules
B) Protein synthesis
C) Protection and support
D) Cellular respiration
Answer: C) Protection and support