Life Sciences
GATE XL topic:biological-sciences PYQs
Build your understanding with focused practice from past exam papers.
Questions 161–170 of 1235. Imported answers require independent review unless marked reviewed.
Question 39
Open questionXL-QMCQ2 marksNeeds review
Phospholipid vesicles prepared in 50
KCl were diluted in water. Based on this information, statements P and Q are made.P: The diluted vesicles will develop membrane potential.
Q: There is a K
concentration difference across the vesicular membrane.Which one of the following options is correct?
Your answerChoose one option.
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Open questionXL-QMCQ2 marksNeeds review
Peptide-binding cleft in MHC-I is formed by
Your answerChoose one option.
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Open questionXL-QMSQ2 marksNeeds review
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.
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Open questionXL-QMSQ2 marksNeeds review
Which of the following is/are peptide hormone(s)?
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Open questionXL-QMSQ2 marksNeeds review
Which of the following is/are heteropolysaccharide(s)?
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Open questionXL-QNAT2 marksNeeds review
The equilibrium dissociation constant of acetic acid is
. The
of acetic acid (rounded off to one decimal place) is ____ .Log in to check the answer
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Open questionXL-QNAT2 marksNeeds review
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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Open questionXL-QNAT2 marksNeeds review
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 ____ .Log in to check the answer
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Open questionXL-RMCQ1 markNeeds review
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.
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Open questionXL-RMCQ1 markNeeds review
Which one of the following mature cell types is live but usually lacks nucleus?
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