Life Sciences
GATE XL topic:biological-sciences PYQs
Build your understanding with focused practice from past exam papers.
Questions 1141–1150 of 1235. Imported answers require independent review unless marked reviewed.
Question 31
Open questionXL-QMCQ2 marksNeeds review
Match the following enzymes in column I with their factors in column II
Column I
(P) Pyruvate decarboxylase
(Q) Glyceraldehyde 3-phosphate dehydrogenase
(R) Pyruvate carboxylase
(S) Glucose-6-phosphate dehydrogenase
Column II
i. Biocytin
ii. NADP⁺
iii. NAD⁺
iv. Thiamine pyrophosphate
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Open questionXL-QMCQ2 marksNeeds review
Match the molecule in column I with its function in column II
Column I
(P) Cholera toxin
(Q) Pertussis toxin
(R) IP3
(S) Caffeine
Column II
(i) modifies Gαi
(ii) inhibits c-AMP phosphodiesterase
(iii) modifies Gαs
(iv) increases intracellular Ca²⁺ level
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In an in vitro dehydrogenation reaction of succinate catalyzed by succinate dehydrogenase, malonate is added. Which one of the following curves represents the effect of malonate on the catalysis of succinate dehydrogenase?
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Cardiotonic steroids have ability to strengthen heart muscle contraction due to the fact that these steroids
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A newly isolated circular plasmid gave two bands of 3.2 and 3 kb on digestion with EcoRI and two bands of 5.0 kb and 1.2 kb on digestion with BamHI. Double digestion with EcoRI and BamHI, yielded four bands of 2.6 kb, 2.4 kb, 0.8 kb and 0.4 kb. Digestion with SalI led to disruption of ampicillin resistance gene cassette. The correct restriction map is
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Open questionXL-RMCQ1 markNeeds review
As per the Angiosperm Phylogeny Group (APG II, 2003) classification, which of the following plant families comprises of only single genus with single species?
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A cavity, lysigenous in origin and possessing volatile oil is found in the pericarp of one of the following plants. Identify the CORRECT answer.
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Among the following, which genetic material is naturally inherited through maternal inheritance in higher plants?
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A typical floral meristem differs from shoot apical meristem on the basis of
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Which of the following plant hormones is a carotenoid-cleavage product?
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