Surface Structures, Inclusions and Motility - Prokaryotic Cells: Structure and Function - Life Sciences Previous Year Questions

1

2009 · Life Sciences · Prokaryotic Cells: Structure and Function · Surface Structures, Inclusions and Motility

Life Sciences (XL) 2009

The rotatory motion of bacterial flagellum is driven by

A

energy obtained through hydrolysis of ATP

B

trans-membrane electrochemical potential linked to proton pumping

C

direct uptake of extra-cellular nutrients

D

concentration gradient of nutrients in the environment

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2

2012 · Life Sciences · Prokaryotic Cells: Structure and Function · Surface Structures, Inclusions and Motility

Life Sciences (XL) 2012

Match the following between organelle or cellular components of a bacterium cell in Group I with the constituents and functionalities in Group II.

A

P-3, Q-2, R-4, S-1

B

P-4, Q-2, R-1, S-3

C

P-3, Q-4, R-2, S-1

D

P-2, Q-3, R-4, S-1

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3

2019 · Life Sciences · Prokaryotic Cells: Structure and Function · Surface Structures, Inclusions and Motility

Life Sciences (XL) 2019

Granules are inclusion bodies found in bacteria. Which of the following statements are true about granules? (i) Granules can be storage vessels for carbohydrates/lipids (ii) Some granules supply substances for a variety of metabolic processes (iii) Granules are dissolved in cytoplasm (iv) Granules are membrane-enclosed structures

A

(ii) and (iii)

B

(iii) and (iv)

C

(i) and (ii)

D

(i) and (iii)

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4

2023 · Life Sciences · Prokaryotic Cells: Structure and Function · Surface Structures, Inclusions and Motility

Life Sciences (XL) 2023

Which one of the statements about bacterial flagella is correct?

A

Flagella varies in length ranging from 0.5 to 2 μm.

B

Flagella are adjacent fibrils with regular patterns.

C

Flagella helps in conjugation.

D

Flagella originates from basal body.

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5

2023 · Life Sciences · Prokaryotic Cells: Structure and Function · Surface Structures, Inclusions and Motility

Life Sciences (XL) 2023

Which of the following is/are non-membrane bound inclusion bodies?

A

Carboxysomes

B

Cyanophycin granules

C

Poly-β-hydroxybutyrate granules

D

Polyphosphate granules

Check answer

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6

2024 · Life Sciences · Prokaryotic Cells: Structure and Function · Surface Structures, Inclusions and Motility

Life Sciences (XL) 2024

Which one of the following organisms has axial filaments?

A

Mycobacterium tuberculosis

B

Pasteurella multocida

C

Treponema pallidum

D

Shigella dysenteriae

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7

2025 · Life Sciences · Prokaryotic Cells: Structure and Function · Surface Structures, Inclusions and Motility

Life Sciences (XL) 2025

Which option(s) correctly match(es) the structures in a bacterial cell (Column I) with their corresponding functions (Column II).

Column I	Column II
P. Cell wall	i. Protection from osmotic stress
Q. Fimbriae	ii. Attachment to surfaces
R. Flagella	iii. Motility
S. Pili	iv. Transfer of genetic material

A

P - i; Q - ii; R - iii; S - iv

B

P - i; Q - iii; R - iii; S - iv

C

P - i; Q - iv; R - ii; S - iii

D

P - ii; Q - iv; R - i; S - iii

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8

2026 · Life Sciences · Prokaryotic Cells: Structure and Function · Surface Structures, Inclusions and Motility

Life Sciences (XL) 2026

Which of the following is/are ring(s) of bacterial flagellum?

A

C ring

B

L ring

C

P ring

D

Z ring

Check answer

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