Q. How many layers does the cell membrane consist of?
-
A.
One
-
B.
Two
-
C.
Three
-
D.
Four
Solution
The cell membrane consists of a phospholipid bilayer, which is two layers.
Correct Answer:
B
— Two
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Q. If a cell has a total of 46 chromosomes, how many chromosomes will each daughter cell have after mitosis?
Solution
After mitosis, each daughter cell will have the same number of chromosomes as the parent cell, which is 46.
Correct Answer:
B
— 46
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Q. If a cell has a volume of 1000 cubic micrometers and a surface area of 600 square micrometers, what is the surface area to volume ratio?
-
A.
0.6
-
B.
1.5
-
C.
0.3
-
D.
2.0
Solution
The surface area to volume ratio is calculated as surface area divided by volume: 600/1000 = 0.6.
Correct Answer:
B
— 1.5
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Q. In a plant cell, which structure is responsible for photosynthesis?
-
A.
Chloroplast
-
B.
Mitochondria
-
C.
Nucleus
-
D.
Cell wall
Solution
Chloroplasts are the organelles in plant cells that conduct photosynthesis.
Correct Answer:
A
— Chloroplast
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Q. What is the function of ribosomes in a cell?
-
A.
To synthesize lipids
-
B.
To produce ATP
-
C.
To synthesize proteins
-
D.
To store waste
Solution
Ribosomes are responsible for protein synthesis in the cell.
Correct Answer:
C
— To synthesize proteins
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Q. What is the primary function of the cell membrane?
-
A.
To provide energy to the cell
-
B.
To control the movement of substances in and out of the cell
-
C.
To store genetic information
-
D.
To synthesize proteins
Solution
The cell membrane controls the movement of substances in and out of the cell, maintaining homeostasis.
Correct Answer:
B
— To control the movement of substances in and out of the cell
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Q. What is the role of the Golgi apparatus in a cell?
-
A.
To modify, sort, and package proteins
-
B.
To produce ribosomes
-
C.
To synthesize DNA
-
D.
To store nutrients
Solution
The Golgi apparatus modifies, sorts, and packages proteins for secretion or use within the cell.
Correct Answer:
A
— To modify, sort, and package proteins
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Q. Which of the following structures is found in prokaryotic cells but not in eukaryotic cells?
-
A.
Nucleus
-
B.
Plasmid
-
C.
Mitochondria
-
D.
Endoplasmic Reticulum
Solution
Plasmids are small, circular DNA molecules found in prokaryotic cells, not in eukaryotic cells.
Correct Answer:
B
— Plasmid
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Q. Which organelle is responsible for energy production in the cell?
-
A.
Nucleus
-
B.
Ribosome
-
C.
Mitochondria
-
D.
Endoplasmic Reticulum
Solution
Mitochondria are known as the powerhouse of the cell, responsible for energy production.
Correct Answer:
C
— Mitochondria
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