Life Sciences
GATE XL year:2025 PYQs
Build your understanding with focused practice from past exam papers.
Questions 101–110 of 122. Imported answers require independent review unless marked reviewed.
Question 101
Open questionXL-TMSQ2 marksNeeds review
Which of the following genetic disorders is/are caused by trinucleotide repeat expansions?
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Open questionXL-TNAT2 marksNeeds review
The mother and the father of five children are carriers (heterozygous) of an autosomal recessive allele that causes cystic fibrosis. The probability of having exactly three normal children among five is _____ (up to two decimal places)
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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 103
Open questionXL-TNAT2 marksNeeds review
An enzyme, which follows Michaelis-Menten equation, catalyzes the reaction A→B. When enzyme and substrate concentrations are 15 nM and 10 μM, respectively, the reaction velocity is 5 μM s⁻¹. If Kₘ for the substrate is 5 μM, the kinetic efficiency of the enzyme will be ______×10⁶ M⁻¹s⁻¹ (in integer)
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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 104
Open questionXL-UMCQ1 markNeeds review
Which of the following contains the phytonutrient allicin?
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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 105
Open questionXL-UMCQ1 markNeeds review
Which mold is responsible for the characteristic blue marbling in blue-veined cheese?
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Open questionXL-UMCQ1 markNeeds review
Which genus of bacteria does NOT have cell wall?
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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 107
Open questionXL-UMCQ1 markNeeds review
Which of the following pigment does NOT have pro-vitamin A activity?
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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 108
Open questionXL-UMCQ1 markNeeds review
Identify the analysis that must be performed FIRST to judge ‘cleanliness’ of spice/herb powders.
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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 109
Open questionXL-UMCQ1 markNeeds review
If there is a delay in oil extraction after bran is separated from the brown rice, the quality of rice bran oil deteriorates. Identify the suitable CAUSE and EFFECT for the deterioration in oil quality.
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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 110
Open questionXL-UMSQ1 markNeeds review
Among the following, which is/are the process(es) that lead to generation of new fats from existing ones?
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