Life Sciences
2024 · Paper 1
Take it one question at a time. Try an answer, then check your understanding.
Complete GATE XL 2024 Paper 1 overview, original pages and practice · Timed previous-paper practice
Questions 34–36 of 122. Imported answers require review unless explicitly marked reviewed.
Question 34
Open questionXL-QNAT1 markNeeds review
In a lactic acid solution at pH 4.8, the concentrations of lactic acid and lactate are 0.01 M and 0.087 M, respectively. The calculated pKa of lactic acid is ________. (Round off to one decimal place)
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Open questionXL-QNAT1 markNeeds review
If a 10 mM solution of a biomolecule in a cuvette of path length 10 mm absorbs 90% of the incident light at 280 nm, the molar extinction coefficient of the biomolecule at this wavelength is __________ M⁻¹cm⁻¹. (Round off to two decimal places)
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Open questionXL-QMCQ2 marksNeeds review
Metabolic intermediates provide the backbone for the synthesis of amino acids. Match the metabolic intermediates listed in Column I with their corresponding amino acids given in Column II.
Column I | Column II |
|---|---|
P. α-Ketoglutarate | i. Histidine |
Q. Ribose 5-phosphate | ii. Glutamate |
R. 3-Phosphoglycerate | iii. Aspartate |
S. Phosphoenolpyruvate | iv. Phenylalanine |
| v. Serine |
Your answerChoose one option.
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