GATE XL 2020 Paper 1 — page 26

Questions 76–78 of 125. Imported answers require review unless explicitly marked reviewed.

Digestion of an immunoglobulin G (IgG) molecule with pepsin will NOT

Your answerChoose one option.

generate a bivalent antigen binding fragment

generate monovalent antigen binding fragments

destroy the complement binding site

cleave the heavy chain of IgG molecule

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Match the process involved in nitrogen or sulfur cycle in Group I with the corresponding microbe in Group II.

Group I P. Denitrification Q. Nitrogen fixation by free-living microbe R. Oxidation of H₂S to sulfur S. Nitrogen fixation by a symbiotic microbe

Group II

Azotobacter

Beggiatoa

Pseudomonas

Rhizobium

Your answerChoose one option.

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

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

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

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

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Determine the correctness or otherwise of the following Assertion [a] and the Reason [r].

Assertion [a]: Diphtheria exotoxin is an example of A-B type toxin.

Reason [r]: The A component of the toxin is released from the host cell while the B component inhibits protein synthesis and kills the host cell.

Your answerChoose one option.

Both [a] and [r] are true and [r] is the correct reason for [a]

Both [a] and [r] are true but [r] is not the correct reason for [a]

Both [a] and [r] are false

[a] is true but [r] is false

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2020 · Paper 1