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Biology for IGCSE & O level - Organisation Of The Organism (Section 1)

1
What is the primary function of the nucleus in a cell?
Answer
(C)
To control cell activities and store genetic information
2
Which of the following is the function of a mitochondrion?
Answer
(B)
Cellular Respiration
3
Which of the following structures are directly involved in the production of proteins within a cell?
Answer
A
C
4
Which of the following is an example of a specialized cell?
Answer
(C)
Both
5
Which structure provides support and protection in plant cells?
Answer
(B)
Cell wall
6
Which of the following is a feature of specialized cells?
Answer
(B)
They perform a specific function.
7
What is the primary function of the cell membrane?
Answer
(C)
Controlling what enters and leaves the cell
8
Which of the following structures are present in a plant cell?
Answer
A
B
C
D
9
Which organelle is responsible for aerobic respiration?
Answer
(B)
Mitochondrion
10
Which of the following is responsible for protein synthesis?
Answer
(C)
Ribosomes
11
What are the main structures involved in protein synthesis in a cell?
Answer
A
C
12
Which of the following best describes the function of the mitochondrion?
Answer
(C)
To produce energy through cellular respiration
13
What are the basic needs of a plant for it to perform photosynthesis?
Answer
A
B
C
14
Which cell structure contains the genetic material (DNA) and controls the cell's activities?
Answer
(C)
Nucleus
15
Which of the following processes occur in a plant cell?
Answer
A
B
C
D
16
What is the primary function of the cell membrane?
Answer
(C)
To control the movement of substances in and out of the cell.
17
Which structure is present in animal cells, but absent in plant cells?
Answer
(D)
Chloroplast
18
In the magnification formula, if the actual size is 1 mm and the image size is 10 mm, what is the magnification?
Answer
(C)
10x
19
Which of the following is NOT a level of organization in living organisms?
Answer
(D)
Community
20
What is the primary function of the nucleus in a cell?
Answer
(C)
To store the cell's genetic material and control its activities.
21
Which of the following is a function of the cell?
Answer
A
B
D
22
What is the function of the ribosome?
Answer
(B)
Protein synthesis
23
Which of the following are key roles played by the cell membrane?
Answer
A
D
24
Which structure stores water, nutrients, and waste in plant cells?
Answer
(B)
Vacuole
25
Which of the following is a key difference between plant and animal cells?
Answer
(C)
Presence of chloroplasts
26
If the actual size of a cell is 0.02 mm and the image size under a microscope is 0.2 mm, what is the magnification?
Answer
(C)
10x
27
What is the main function of the rough endoplasmic reticulum (RER)?
Answer
(B)
Protein synthesis
28
Which of the following is NOT an example of a tissue?
Answer
(C)
Organ
29
Which structure is present in both prokaryotic and eukaryotic cells?
Answer
(B)
Ribosomes
30
What is the function of ribosomes in a cell?
Answer
(B)
Protein synthesis
31
What is the primary function of the cell membrane?
Answer
(C)
Control of substances entering and leaving the cell
32
Which organelle is present in plant cells but not in animal cells, and is essential for photosynthesis?
Answer
(B)
Chloroplast
33
Which cell structure controls what enters and leaves the cell?
Answer
(B)
Cell membrane
34
Which of the following is the correct order of organization from smallest to largest?
Answer
(A)
Organelle, Cell, Tissue, Organ, System
35
What is the function of the cell membrane?
Answer
(C)
To control movement in and out of the cell
36
Which of the following is/are involved in protein synthesis?
Answer
A
C
37
Which level of organization comes *after* tissue?
Answer
(B)
Organ
38
What is the main function of the vacuole in a plant cell?
Answer
(B)
To store water and maintain cell turgor pressure
39
Which of the following can be found in a plant cell?
Answer
A
B
C
D
40
What is the role of the nucleus in a cell?
Answer
(C)
Controlling cell activities and storing genetic material
41
What is the function of the mitochondria?
Answer
(C)
Cellular respiration
42
Which of the following is a correct sequence from smallest to largest?
Answer
(A)
Cell, Tissue, Organ, Organ system
43
Which of the following processes are carried out by plant cells?
Answer
A
B
C
D
44
Which organelle is responsible for energy production in a cell?
Answer
(B)
Mitochondrion
45
Which of the following structures is responsible for storing genetic information in a cell?
Answer
(B)
The nucleus
46
Which organelle is present in both plant and animal cells?
Answer
(C)
Mitochondria
47
Which of the following is an example of a specialized cell?
Answer
(C)
All of the above
48
Which of the following is a feature of a specialized cell?
Answer
(B)
A structure adapted for a specific function
49
Which of the following are involved in protein synthesis?
Answer
A
C
50
Which of the following is the function of chloroplast?
Answer
(A)
Photosynthesis