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Practice Questions

Regarding viruses, the structural component present in all viruses is

A. Ribosome
B. Capsid ✓
C. Cell membrane
D. Cytoplasm

Capsid is the protein coat that surrounds viral nucleic acid and is present in all viruses. Ribosomes, cytoplasm, and true cellular membranes are absent in all viruses.

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nmdcat.online BIO NMDCAT
Jun 25, 2026

The x-component of a vector is √3 times its y-component. The angle the vector makes with the x-axis is…

A. 30° ✓
B. 45°
C. 60°
D. 90°
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nmdcat.online AA Physics
Jun 25, 2026

A force F=6i-8j N produces an acceleration of 1 m/s². The mass of the body is…

A. 2 kg
B. 10 kg ✓
C. 14 kg
D. 100 kg
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nmdcat.online AA Physics
Jun 25, 2026

Given A=2i+3j and B=i+j, the component of vector A along vector B is…

A. 5
B. 5/√2 ✓
C. √2
D. √13
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nmdcat.online AA Physics
Jun 25, 2026

The resultant of two forces, 12 N and 5 N, acting on a particle has a magnitude of 13 N. The angle between the two original forces is…

A. 0°
B. 45°
C. 90° ✓
D. 180°
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nmdcat.online AA Physics
Jun 25, 2026

A vector makes an angle of 45° with the x-axis and 60° with the y-axis. The angle it makes with the z-axis must be…

A. 30°
B. 45°
C. 60° or 120° ✓
D. 90°
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nmdcat.online AA Physics
Jun 25, 2026

A force vector pointing from the origin to the point (3, 4, 12) has a magnitude of…

A. 19
B. 13 ✓
C. √25
D. √153
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nmdcat.online AA Physics
Jun 25, 2026

The resultant of F1 = 5N at 37° and F2 = 5N at 323° is… (cos37° ≈ 0.8, sin37° ≈ 0.6)

A. 10 N along the x-axis
B. 8 N along the x-axis ✓
C. 6 N along the y-axis
D. 0 N
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nmdcat.online AA Physics
Jun 25, 2026

Two vectors A and B are such that A+B = R and A-B = S. If R is perpendicular to S, then…

A. A = B (magnitude) ✓
B. A is perpendicular to B
C. A is parallel to B
D. B = 2A
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nmdcat.online AA Physics
Jun 25, 2026

The resultant of two perpendicular forces has a magnitude of 10 N. If one force is 6 N, the other force must be…

A. 4 N
B. 16 N
C. 8 N ✓
D. 2 N
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nmdcat.online AA Physics
Jun 25, 2026
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