GATE XL 2026 Paper 1 — page 14

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

For a simple enzyme that follows Michaelis-Menten kinetics, kinetic data was collected in the absence (dotted line, -I) or presence (solid line, +I) of an uncompetitive inhibitor (I). Which one of the following Eadie-Hofstee plots best describes the expected result?

(

= initial velocity, [S] = free substrate concentration)

Your answerChoose one option.

Diagram for Life Sciences question 40 (figure 2)

Diagram for Life Sciences question 40 (figure 3)

Diagram for Life Sciences question 40 (figure 4)

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

Which statement(s) is/are true about the 5′-capping of eukaryotic mRNA?

Your answerSelect all correct options. You can choose more than one.

Triphosphate enzyme removes the γ-phosphate from the 5′-terminal nucleotide.

A transferase links ATP to the dephosphorylated nucleotide of mRNA at its 5′-end.

Methyl transferase adds a −CH₃ group to the N-7 position of the newly added guanine base.

5′-capping happens shortly after mRNA emerges from the exit tunnel of RNA polymerase.

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

Which of the following statements about pertussis toxin is/are NOT true?

Your answerSelect all correct options. You can choose more than one.

It causes whooping cough.

It is a heteromeric protein.

It causes ADP-ribosylation of the α-subunit of Gᵢ.

It inhibits adenylate cyclase.

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

2026 · Paper 1

Question 40

Question 41

Question 42