Life Sciences
2020 · Paper 1
Take it one question at a time. Try an answer, then check your understanding.
Complete GATE XL 2020 Paper 1 overview, original pages and practice · Timed previous-paper practice
Questions 55–57 of 125. Imported answers require review unless explicitly marked reviewed.
Question 10
Open questionXL-RNAT1 markNeeds review
An mRNA of a nuclear encoded plant gene, DSH20 has an ORF of 1353 nucleotides. Provided that average molecular weight of amino acid is 110 Dalton (Da), calculated molecular weight of DSH20 protein in kDa (round off to 1 decimal place) is _____
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Open questionXL-RMCQ2 marksNeeds review
Group I, Group II and Group III represent enzyme, product of the enzymatic reaction, and metabolic process, respectively.
Group I: P. Hexokinase; Q. Fumarase; R. PEP Carboxylase; S. Glycolate oxidase
Group II: i. Malate; ii. Glucose 6-P; iii. Hydrogen peroxide; iv. Cinnamic acid; v. Oxaloacetic acid
Group III: 1. Glycolysis; 2. Photorespiration; 3. TCA cycle; 4. Photosynthesis
The CORRECT combination for Group I, Group II and Group III is
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Open questionXL-RMCQ2 marksNeeds review
Match the following in CORRECT combination between Group I and Group II with reference to the agents that interfere with oxidative phosphorylation
Group I: P. Cyanide; Q. Antimycin A; R. Aurovertin; S. 2,4-Dinitrophenol
Group II: i. Blocks electron transfer from cyt b to cyt c₁; ii. Inhibits F₁; iii. Uncoupling of phosphorylation from electron transfer; iv. Inhibits cytochrome oxidase; v. Inhibits K⁺ ionophore
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