GATE XL format:msq PYQs & Answers — Page 9

Questions 81–90 of 179. Imported answers require independent review unless marked reviewed.

Topic practice 179 questionsPage 9 of 18

Identify the CORRECT combination(s) between the enzymes in Group 1 and the reactions in Group 2 they catalyze.

Group 1: (P) Cinnamate-4-hydroxylase; (Q) Glycerate kinase; (R) PEP carboxylase; (S) Nitrate reductase.

Group 2: (i) L-phenylalanine → Cinnamic acid; (ii) Glyceraldehyde 3-phosphate → dihydroacetone phosphate; (iii) Glycolate + O₂ → Glyoxylate + H₂O₂; (iv) NO₃⁻ + NAD(P)H + H⁺ → NO₂⁻ + NAD(P)⁺ + H₂O

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

S–iv

Q–ii

P–i

R–iii

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Which of the following is/are active transport mechanism(s) in prokaryotes where the substance is chemically altered during transport across the membrane?

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

Group translocation

Simple diffusion

Facilitated diffusion

Osmosis

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Which of the following cocci is/are examples of division in one plane?

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

Staphylococci

Streptococci

Micrococci

Diplococci

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Which of the following event(s) occur(s) during translation in prokaryotes?

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tRNA binding to the start codon of mRNA on the 30s subunit of ribosome

Anticodon of tRNA binding to the start codon of mRNA on the 50s subunit of ribosome

The ribosome continues to move along the mRNA to add new amino acids to the polypeptide

The polypeptide is released when the ribosome reaches the stop codon

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Which of the following is/are consequence(s) of nitrous acid (HNO₂) mediated deamination?

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Deamination of cytosine, adenine and guanine

GC-to-AT transitions

AT-to-GC transitions

Addition of alkyl group to the bases

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At root nodules, which of the following C4 organic acid(s) is/are transported across the symbiosome membrane and into bacteroids?

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Succinate

Pyruvate

Malate

Fumarate

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Which of the following is/are TRUE about the Escherichia coli chromosome?

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It is typically bound by histones

It is circular in nature

It is found in the nucleoid

It contains multiple origins of replication

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Consider a species of brightly colored beetle. Which one or more of the following observations suggest(s) that this species is aposematic?

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

Both male and female beetles are brightly colored.

Only male beetles are brightly colored.

Only female beetles are brightly colored.

The beetle species is toxic and distasteful.

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The embryos of which one or more of the following animals show meroblastic cleavage?

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

Danio rerio (zebrafish)

Gallus gallus (chicken)

Synapta digitata (sea cucumber)

Xenopus laevis (frog)

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Which one or more of the following parasites is/are typically transmitted by mosquitoes as vector?

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

Leishmania donovani

Plasmodium vivax

Wuchereria bancrofti

Trichuris trichiura

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GATE XL format:msq PYQs

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Question 100