Q. Which part of the cell is responsible for controlling cell activities? (2021)
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A.
Cytoplasm
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B.
Nucleus
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C.
Mitochondria
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D.
Golgi apparatus
Solution
The nucleus contains the cell's genetic material and is responsible for controlling cell activities.
Correct Answer: B — Nucleus
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Q. Which part of the cell is responsible for controlling the cell's activities? (2018)
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A.
Cytoplasm
-
B.
Nucleus
-
C.
Mitochondria
-
D.
Golgi apparatus
Solution
The nucleus contains the cell's genetic material and controls its activities by regulating gene expression.
Correct Answer: B — Nucleus
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Q. Which structure is involved in the synthesis of lipids? (2022)
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A.
Rough ER
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B.
Smooth ER
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C.
Golgi apparatus
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D.
Lysosome
Solution
The smooth endoplasmic reticulum (Smooth ER) is involved in the synthesis of lipids and detoxification processes.
Correct Answer: B — Smooth ER
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Q. Which structure is responsible for controlling the entry and exit of substances in a cell? (2022)
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A.
Cell wall
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B.
Plasma membrane
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C.
Cytoplasm
-
D.
Nucleus
Solution
The plasma membrane regulates the movement of substances in and out of the cell, maintaining homeostasis.
Correct Answer: B — Plasma membrane
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Q. Which structure is responsible for maintaining the shape of plant cells? (2021)
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A.
Cell membrane
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B.
Cell wall
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C.
Cytoplasm
-
D.
Chloroplast
Solution
The cell wall provides structural support and maintains the shape of plant cells.
Correct Answer: B — Cell wall
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Q. Which structure is responsible for photosynthesis in plant cells? (2021)
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A.
Mitochondria
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B.
Chloroplast
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C.
Ribosome
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D.
Vacuole
Solution
Chloroplasts are the organelles responsible for photosynthesis, converting light energy into chemical energy.
Correct Answer: B — Chloroplast
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Q. Which structure is responsible for the synthesis of ATP? (2022)
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A.
Chloroplast
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B.
Mitochondria
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C.
Nucleus
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D.
Golgi apparatus
Solution
Mitochondria are responsible for the synthesis of ATP through cellular respiration.
Correct Answer: B — Mitochondria
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Q. Which structure is responsible for the synthesis of lipids? (2021)
-
A.
Smooth endoplasmic reticulum
-
B.
Rough endoplasmic reticulum
-
C.
Golgi apparatus
-
D.
Mitochondria
Solution
The smooth endoplasmic reticulum is involved in the synthesis of lipids and detoxification processes.
Correct Answer: A — Smooth endoplasmic reticulum
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Q. Which structure is responsible for the synthesis of ribosomal RNA? (2021)
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A.
Nucleus
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B.
Nucleolus
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C.
Ribosome
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D.
Endoplasmic reticulum
Solution
The nucleolus is the site within the nucleus where ribosomal RNA (rRNA) is synthesized.
Correct Answer: B — Nucleolus
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