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Q.88 Which one of the following parasites does NOT cause lymphatic filariasis? (A) Brugia malayi (B) Brugia timori (C) Wuchereria bancrofti (D) Mansonella streptocerca

GATE Life Science 2019 Previous Year Papers with Solutions

Which Parasite Does NOT Cause Lymphatic Filariasis?

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January 3, 2026
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Q.88 Which one of the following parasites does NOT cause lymphatic filariasis?(A) Brugia malayi (B) Brugia timori(C) Wuchereria bancrofti (D) Mansonella streptocerca The correct answer is (D) Mansonella streptocerca. Lymphatic […]

Q.87 In eukaryotic chromatin organization, which one of the histones seals off the nucleosome at the location at which linker DNA enters and leaves the nucleosome? (A) H1 (B) H2A-H2B (C) H3 (D) H4

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Histone Seals Off Nucleosome

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Q.87 In eukaryotic chromatin organization, which one of the histones seals off the nucleosome at the location at which linker DNA enters and leaves the nucleosome? (A) H1 (B) H2A-H2B […]

Q.86 Which one of the following animals possesses two chambered heart? (A) Chameleon (B) Peacock (C) Gold fish (D) Blue whale

GATE Life Science 2019 Previous Year Papers with Solutions

Which Animal Possesses Two Chambered Heart?

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January 3, 2026
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Q.86 Which one of the following animals possesses two chambered heart? (A) Chameleon (B) Peacock (C) Gold fish (D) Blue whale The goldfish possesses a two-chambered heart. This structure, consisting of […]

Q.85 When grouping bacteria using numerical taxonomy approach, many characteristics are determined for each strain. If all characteristics are same, then the % similarity is 100. When comparing two bacterial strains, if 72 characteristics are the same and 44 characteristics are different, the % similarity (round off to 2 decimal places) between the two strains is _____.

GATE Life Science 2019 Previous Year Papers with Solutions

Bacterial Strains % Similarity in Numerical Taxonomy

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Q.85 When grouping bacteria using numerical taxonomy approach, many characteristics are determined for each strain. If all characteristics are same, then the % similarity is 100. When comparing two bacterial […]

Q.84 Consider a spherical bacterial cell with diameter 2 μm and a eukaryotic cell of spherical shape with a diameter of 20 μm. The surface area to volume (in μm-1) ratio of the bacterial cell (round off to 1 decimal place) is ______ times more than that of the eukaryotic cell.

GATE Life Science 2019 Previous Year Papers with Solutions

Surface Area to Volume Ratio

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Q.84 Consider a spherical bacterial cell with diameter 2 μm and a eukaryotic cell of sphericalshape with a diameter of 20 μm. The surface area to volume (in μm–1) ratio […]

Q.83 Match the diseases with the appropriate causative agents Disease Causative agent (i) Rheumatic heart disease (p) Candida albicans (ii) Syphilis (q) Group A Streptococcus (iii) Genital warts (r) Human papilloma virus (iv) Oral thrush (s) Treponema pallidum (A) (i)-(p), (ii)-(q), (iii) –(s), (iv)-(r) (B) (i)- (q), (ii)- (s), (iii)-(r), (iv)-(p) (C) (i)-(r), (ii)-(s), (iii)-(p), (iv)-(q) (D) (i)-(s), (ii)-(q), (iii)- (p), (iv) –(r)

GATE Life Science 2019 Previous Year Papers with Solutions

Match Diseases with Causative Agents

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Q.83 Match the diseases with the appropriate causative agents Disease […]

Q.82 Match the class of antibodies to appropriate description or function Antibodies Description / function (i) IgA (p) Mucosal immunity (ii) IgG (q) Immunity to parasitic infections (iii) IgD (r) Most abundant antibody in the blood (iv) IgE (s) Found on the B cell membranes (A) (i)-(s), (ii)-(r), (iii)-(q), (iv)-(p) (B) (i)-(p), (ii)-(q), (iii)-(s), (iv)-(r) (C) (i)-(p), (ii)-(r), (iii)-(s), (iv)-(q) (D) (i)-(p), (ii)-(s), (iii)-(q), (iv)-(r)

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Match Antibodies to Functions

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Q.82 Match the class of antibodies to appropriate description or functionAntibodies Description / function(i) IgA […]

Q.81 Which of the following processes are involved in horizontal gene transfer (HGT)? (i) Conjugation (ii) Transduction (iii) Binary fission (iv) Transformation (v) Translesion synthesis (vi) Transversion (A) (i), (iii), (iv) (B) (i), (iv), (vi) (C) (ii), (iv), (v) (D) (i), (ii), (iv)

GATE Life Science 2019 Previous Year Papers with Solutions

Horizontal Gene Transfer Processes

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January 3, 2026
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Q.81 Which of the following processes are involved in horizontal gene transfer (HGT)? (i) Conjugation (ii) Transduction (iii) Binary fission (iv) Transformation (v) Translesion synthesis (vi) Transversion (A) (i), (iii), […]

Q.80 Among the following characteristics listed below, select those that are the most appropriate for archaebacteria. (i) Peptidoglycan containing muramic acid and D-amino acids are present in cell wall (ii) Long chain branched alcohols (phytanols) bound to glycerol by ether linkages are found in the lipids of cytoplasmic membrane (iii) First amino acid to initiate new polypeptide chain is N-Formylmethionine (iv) Translation process is sensitive to the action of diphtheria toxin (A) (i), (iii) (B) (ii), (iii), (iv) (C) (ii), (iv) (D) (i), (ii), (iv)

GATE Life Science 2019 Previous Year Papers with Solutions

Archaebacteria Characteristics

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January 3, 2026
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Q.80 Among the following characteristics listed below, select those that are the most appropriatefor archaebacteria.(i) Peptidoglycan containing muramic acid and D–amino acids are present in cellwall(ii) Long chain branched alcohols […]