Life Sciences
GATE XL exam:gate PYQs
Build your understanding with focused practice from past exam papers.
Questions 941–950 of 1235. Imported answers require independent review unless marked reviewed.
Question 16
Open questionXL-SMCQ2 marksNeeds review
Which of the following processes are involved in horizontal gene transfer (HGT)?
(i) Conjugation
(ii) Transduction
(iii) Binary fission
(iv) Transformation
(v) Translation synthesis
(vi) Transversion
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Open questionXL-SMCQ2 marksNeeds review
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 |
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Open questionXL-SMCQ2 marksNeeds review
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 |
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Open questionXL-SNAT2 marksNeeds review
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.
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Open questionXL-SNAT2 marksNeeds review
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 ______.
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You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 1
Open questionXL-TMCQ1 markNeeds review
Which one of the following animals possesses two chambered heart?
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Open questionXL-TMCQ1 markNeeds review
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?
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Open questionXL-TMCQ1 markNeeds review
Which one of the following parasites does NOT cause lymphatic filariasis?
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Open questionXL-TMCQ1 markNeeds review
A species adapted to a specific habitat is called
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Open questionXL-TMCQ1 markNeeds review
The phylum that is characterized by the animals having a “water vascular system” is
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