GATE XL 2024 Paper 1 — page 14

Questions 40–42 of 122. Imported answers require review unless explicitly marked reviewed.

Which one or more of the following statements correctly describe(s) fluorescence spectroscopy?

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The emission maxima (λₘₐₓ) is independent of the excitation wavelength.

The emission maxima (λₘₐₓ) depends on the concentration of a quencher.

The emission maxima (λₘₐₓ) varies with solvent polarity.

The emission maxima (λₘₐₓ) varies with temperature.

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Which one or more of the following statements is/are correct in the processing of pre-mRNA in eukaryotes?

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3′ → 5′ exonuclease activity is involved in the conversion of pre-mRNA to mRNA.

5′-cap and addition of 3′-poly A tail precedes splicing.

Splicing of pre-mRNA occurs via transesterification reaction.

Alternative splicing can yield different mRNA products from the same pre-mRNA.

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Which one or more of the following statements correctly describe(s) the changes upon the addition of puromycin during eukaryotic translation?

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Puromycin resembles aminoacyl end of the charged tRNA.

Puromycin occupies the A site of the translating ribosomes.

Puromycin occupies the P site of the translating ribosomes.

Puromycin occupies the E site of the translating ribosomes.

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2024 · Paper 1