GATE XL 2020 Paper 1 — page 14

Questions 40–42 of 125. Imported answers require review unless explicitly marked reviewed.

Polypeptides are either biosynthesized on the ribosomes using an mRNA template or chemically synthesized by the Merrifield’s solid phase method. The correct directions of peptide synthesis are

Your answerChoose one option.

C→N direction on the ribosomes and N→C direction on the solid phase

N→C direction on the ribosomes and C→N direction on the solid phase

N→C direction in both cases

C→N direction in both cases

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A solution absorbs 20% of the incident light in a cuvette of path length 1.0 cm. The amount of light transmitted by the same solution in a cuvette of 3.0 cm path length is ________% (rounded off to one decimal place).

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The second pKa of phosphoric acid is 6.8. The ratio of Na₂HPO₄ to NaH₂PO₄ required to obtain a buffer of pH 7.0 is ________ (rounded off to two decimal places).

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2020 · Paper 1

Question 15

Question 16

Question 17