GATE XL Prokaryotic Cells: Structure and Function PYQs & Answers — Page 2

Questions 11–15 of 15. Imported answers require independent review unless marked reviewed.

Nocardia spp. are not amenable to the classical method of Gram staining due to the presence of

Your answerChoose one option.

N-acetylasaminuronic acid in the cell wall.

thick peptidoglycan.

mycolic acid.

keto-deoxy-octulosonic acid.

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Which part of the lipopolysaccharides has toxic properties that make some bacterial infections a potentially serious medical problem?

Your answerChoose one option.

Polysaccharide side-chains

Lipid A portion

Repeat carbohydrate units

Core region of polysaccharides

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Which of the following cellular structures are absent in eukaryotes and are present at least in some prokaryotic organisms? (i) Respiratory enzymes (ii) Ribosomes (iii) Nucleoid (iv) Internal membranes (v) Pili

Your answerChoose one option.

(iii) and (v)

(i) and (iv)

(i), (ii) and (v)

(iii), (iv)

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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

Your answerChoose one option.

(ii) and (iii)

(iii) and (iv)

(i) and (ii)

(i) and (iii)

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Active transport involves the movement of a biomolecule against a concentration gradient across the cell membrane using metabolic energy. If the extracellular concentration of a biomolecule is 0.005M and its intracellular concentration is 0.5M, the least amount of energy that the cell would need to spend to transport this biomolecule from the outside to the inside of the cell is ________ kcal/mol (up to 2 decimal points). (Temperature T = 298K and universal gas constant R= 1.98 cal/mol·K)

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GATE XL Prokaryotic Cells: Structure and Function PYQs

Question 4

Question 3

Question 12

Question 13

Question 17