GATE XL year:2025 PYQs & Answers — Page 5

Questions 41–50 of 122. Imported answers require independent review unless marked reviewed.

Topic practice 122 questionsPage 5 of 13

Which of the following peptides do/does NOT absorb ultraviolet light above 250

wavelength?

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

MQTVWG

YDEIGVL

PLSNGK

GSQTKRL

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Which of the following is/are peptide hormone(s)?

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

Calcitonin

Glucagon

Serotonin

Thyroxine

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Which of the following is/are heteropolysaccharide(s)?

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

Chondroitin-4-sulfate

Chitin

Cellulose

Heparin

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The equilibrium dissociation constant of acetic acid is

. The

of acetic acid (rounded off to one decimal place) is ____ .

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The DNA double helix measures 0.34

. The diameter of a nucleosome core particle is 11

. If the ratio of wrapped DNA length to nucleosome diameter is 4.5, the length of DNA around the nucleosome (to the nearest integer) is ____

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E. coli is grown exclusively in a medium containing

as the sole nitrogen source. Subsequently, the cells were shifted to a medium containing

. The molar ratio of hybrid DNA (

) to light DNA (

) after four generations (rounded off to two decimal places) will be ____ .

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Correctly match the names of the plant taxonomists (Group I) with the titles of the books they authored (Group II).

Group I: (P) John Hutchinson; (Q) Adolf Engler and Karl Prantl; (R) Arthur Cronquist; (S) Alfred Barton Rendle. Group II: (1) Classification of Flowering Plants; (2) Evolution and Classification of Flowering Plants; (3) Die Naturlichen Pflanzenfamilien; (4) The Families of Flowering Plants.

Your answerChoose one option.

P-4; Q-3; R-2; S-1

P-1; Q-3; R-2; S-4

P-1; Q-2; R-4; S-3

P-2; Q-1; R-4; S-3

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Which one of the following mature cell types is live but usually lacks nucleus?

Your answerChoose one option.

Phloem parenchyma

Phloem companion

Phloem sieve element

Phloem-pole pericycle

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Correctly match the carnivorous plants (Group I) with the organs (Group II) they modify to trap the prey.

Group I: (P) Pitcher plant (Nepenthes); (Q) Bladderwort (Utricularia); (R) Sundew (Drosera); (S) Venus flytrap (Dionaea). Group II: (1) Leaf; (2) Fruit; (3) Stem; (4) Tendril.

Your answerChoose one option.

P-1; Q-2; R-3; S-1

P-1; Q-1; R-1; S-1

P-2; Q-2; R-2; S-2

P-2; Q-4; R-1; S-1

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Which one of the following commercially important carbohydrates is naturally produced only by the members of the plant kingdom?

Your answerChoose one option.

Cellulose

Pectin

Chitin

Starch

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GATE XL year:2025 PYQs

Question 41

Question 42

Question 43

Question 44

Question 45

Question 46

Question 47

Question 48

Question 49

Question 50