GATE XL format:msq PYQs & Answers

Attempt a question, record the concept and assumptions, then check the available answer. Rework mistakes after revising the relevant concepts. Topic tags can overlap; review the question context.

Questions 1–10 of 179. Imported answers require independent review unless marked reviewed.

Topic practice 179 questionsPage 1 of 18

The CORRECT combination(s) of element and their ground state electronic configuration is/are

(Atomic Numbers: Ar-18, Sc-21, Cr-24, Mn-25 and Fe-26)

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

Sc – [Ar] 4s² 3d¹

Cr – [Ar] 4s² 3d⁴

Mn – [Ar] 4s² 3d⁵

Fe – [Ar] 4s² 3d⁶

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The major component(s) of phosphate buffer at physiological pH of 7.4 is/are

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

H₃PO₄

H₂PO₄⁻

HPO₄²⁻

PO₄³⁻

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The CORRECT statement(s) about a competitive inhibitor of an enzyme is/are

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

The competitive inhibitor binds to the substrate-binding site of the enzyme

The competitive inhibitor binds to the substrate

The competitive inhibitor is less effective at higher substrate concentration

The competitive inhibitor is more effective at higher substrate concentration

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Among the following, the occupied molecular orbital(s) of carbon monoxide is/are

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

Diagram for Life Sciences question 25 (figure 2)

Diagram for Life Sciences question 25 (figure 3)

Diagram for Life Sciences question 25 (figure 4)

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The option(s) with the CORRECT order of ionisation energy is/are

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Which of the following options show(s) the correct pairing of a complement protein with its function?

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

C5a : inflammation

C3b : opsonization

C3a : opsonization

C5b : inflammation

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Fluorescence is a result of which one or more of the following?

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

The transition of electrons from singlet ground state to singlet transition state.

The transition of electrons from lower singlet excited state to singlet ground state.

The release of energy in the form of light of wavelength higher than the incident wavelength.

The release of energy in the form of light of lower wavelength than the incident wavelength.

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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.

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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.

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Telomerase has which one or more of the following activities?

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

DNA-dependent RNA polymerase

Reverse transcriptase

RNA-dependent DNA polymerase

5′ → 3′ exonuclease

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GATE XL format:msq PYQs

How to practice format:msq

Question 15

Question 16

Question 24

Question 25

Question 26

Question 31

Question 32

Question 41

Question 42

Question 43