Life Sciences
GATE XL topic:life-sciences PYQs
Build your understanding with focused practice from past exam papers.
Questions 1171–1180 of 1235. Imported answers require independent review unless marked reviewed.
Question 61
Open questionXL-SMCQ1 markNeeds review
Which one of the following is a contagious disease?
Your answerChoose one option.
Log in to check the answer
You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 62
Open questionXL-SMCQ1 markNeeds review
The inner mitochondrial membrane comprises of a series of folds known as
Your answerChoose one option.
Log in to check the answer
You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 63
Open questionXL-SMCQ1 markNeeds review
Which one of the following antibiotics is NOT produced by Streptomyces sp.?
Your answerChoose one option.
Log in to check the answer
You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 64
Open questionXL-SMCQ1 markNeeds review
Which one of the following statements is TRUE about MacConkey (MAC) agar medium?
Your answerChoose one option.
Log in to check the answer
You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 65
Open questionXL-SMCQ1 markNeeds review
As an antiseptic, alcohol is effective against
Your answerChoose one option.
Log in to check the answer
You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 66
Open questionXL-SMCQ2 marksNeeds review
An antigen X was injected into a rabbit for the first time at time P. Then the rabbit was given a booster dose of X at time Q. Which one of the following figures accurately depicts the adaptive immune response by the rabbit against X?
Your answerChoose one option.
Log in to check the answer
You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 67
Open questionXL-SMCQ2 marksNeeds review
A bactericidal agent X is added after 3 hours of growth of a bacterial culture. Following the addition of X, the bacterial growth was measured using the standard plate count method till 24 hours. Which one of the following figures is the most accurate representation of the action of X?
Your answerChoose one option.
Log in to check the answer
You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 68
Open questionXL-SMCQ2 marksNeeds review
Match the diseases given in Group I with their causative agents from Group II.
Group I
(P) Plague
(Q) Rabies
(R) Q fever
(S) Malaria
Group II
(I) Coxiella burnetii
(II) Plasmodium spp.
(III) Yersinia pestis
(IV) Lyssavirus
Your answerChoose one option.
Log in to check the answer
You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 69
Open questionXL-SMCQ2 marksNeeds review
Match the enzymes given in Group I with the events from Group II.
Group I
(P) UvrABC endonuclease
(Q) Reverse transcriptase
(R) AP endonuclease
(S) ATP sulfurylase
Group II
(I) Retrovirus replication
(II) Base excision repair
(III) Nucleotide excision repair
(IV) Pyrosequencing
Your answerChoose one option.
Log in to check the answer
You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 70
Open questionXL-SMCQ2 marksNeeds review
Match the terms given in Group I with the descriptions from Group II.
Group I
(P) Photoautotrophs
(Q) Chemoautotrophs
(R) Photoheterotrophs
(S) Chemoheterotrophs
Group II
(I) Use inorganic chemical reactions for energy production
(II) Use organic compounds for energy production
(III) Use sunlight as energy source and carbon dioxide as carbon source
(IV) Use sunlight as energy source and organic compounds as carbon source
Your answerChoose one option.
Log in to check the answer
You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer