Life Sciences
2018 · Paper 1
Take it one question at a time. Try an answer, then check your understanding.
Complete GATE XL 2018 Paper 1 overview, original pages and practice · Timed previous-paper practice
Questions 85–87 of 125. Imported answers require review unless explicitly marked reviewed.
Question 20
Open questionXL-SNAT2 marksNeeds review
The following stoichiometric equation represents the conversion of glucose to lactic acid in a cell:
Glucose + 2Pi + 2ADP → 2Lactate + 2ATP + 2H₂O
If the free energy of conversion of glucose to lactic acid alone is ΔG⁰ = −4700 cal/mol, the efficiency of energy transfer is ______ % (up to 1 decimal point).
(ΔG⁰ for ATP hydrolysis is −7.3 kcal/mol)
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Open questionXL-TMCQ1 markNeeds review
Animals belonging to phylum Echinodermata are closer to chordates than other invertebrate phyla. Which ONE of the following reasons can account for this relatedness?
Your answerChoose one option.
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Open questionXL-TMCQ1 markNeeds review
A zoologist recovered some tissue from preserved skin of a woolly mammoth. Further genetic analysis requires DNA isolation and increase its amount. Which ONE of the following techniques would be most useful for increasing the amount of DNA?
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