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Practice Questions

The vertical (y) component of a velocity vector of 50 m/s making an angle of 60° with the horizontal is approximately…

A. 25.0 m/s
B. 50.0 m/s
C. 35.4 m/s
D. 43.3 m/s ✓
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nmdcat.online AA Physics
Jun 25, 2026

A force of 100 N is directed at an angle of 30° with respect to the positive x-axis. Its horizontal (x) component is approximately…

A. 50.0 N
B. 86.6 N ✓
C. 100 N
D. 70.7 N
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nmdcat.online AA Physics
Jun 25, 2026

Prions differ from viruses because they contain:

A. DNA only
B. RNA only
C. Protein only ✓
D. Protein and RNA
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nmdcat.online ACELLULAR LIFR
Jun 24, 2026

Which of the following is a characteristic of viroids?

A. Protein coat only
B. Circular single-stranded RNA ✓
C. Double-stranded DNA
D. Lipid envelope
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nmdcat.online ACELLULAR LIFR
Jun 24, 2026

What is the shape of the HIV virus?

A. Rod-shaped
B. Spherical ✓
C. Helical
D. Cuboidal
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nmdcat.online ACELLULAR LIFR
Jun 24, 2026

Which of the following is a double-stranded DNA virus?

A. Influenza
B. HIV
C. Herpesvirus ✓
D. Hepatitis A
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nmdcat.online ACELLULAR LIFR
Jun 24, 2026

Viral genome inserted into bacterial DNA is termed as:

A. Lysogeny
B. Prophage ✓
C. Lytic cycle
D. Binary fission
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nmdcat.online ACELLULAR LIFR
Jun 24, 2026

The genetic material of a virus can be:

A. DNA only
B. RNA only
C. Either DNA or RNA ✓
D. Both DNA and RNA
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nmdcat.online ACELLULAR LIFR
Jun 24, 2026

Which instrument was essential for revealing the structure of viruses?

A. Light microscope
B. Compound microscope
C. Electron microscope ✓
D. Dissecting microscope
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nmdcat.online ACELLULAR LIFR
Jun 24, 2026

Which virus belongs to Baltimore Class VI?

A. HIV ✓
B. Poliovirus
C. Smallpox
D. Rabies
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nmdcat.online ACELLULAR LIFR
Jun 24, 2026
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