GATE XL format:msq PYQs & Answers — Page 12

Questions 111–120 of 179. Imported answers require independent review unless marked reviewed.

Topic practice 179 questionsPage 12 of 18

Which one or more processes listed below DOES NOT/DO NOT produce carbon dioxide during fermentation?

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

Brewing wine using yeast.

Baking bread using yeast.

Making yogurt using lactobacillus.

Making cheese using fungus.

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A drought tolerant rice genotype was found to be associated with a missense mutation in the gene A. Which one or more of the following experiments is/are appropriate to validate whether the mutation in A is the causal factor for drought tolerance?

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

Introduce the same mutation in a drought sensitive rice genotype and test if it becomes drought tolerant.

Delete the wild-type A in drought sensitive plant and test if it becomes drought tolerant.

Determine the stability of the protein encoded by the wild-type and the mutant forms of A.

Repair the mutation in the drought tolerant rice genotype and test if it becomes drought sensitive.

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Blue light can directly induce opening of stomata. Blue light also triggers photosynthesis in the guard cells, which indirectly induces stomatal opening. Which one or more of the following experimental approaches would test the direct effect of blue light on stomatal opening?

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

Application of low photon fluxes of red light followed by high fluence rate of blue light.

Application of high fluence rates of red light followed by low photon fluxes of blue light.

Application of high fluence rates of blue light followed by high photon fluxes of red light.

Inhibition of photosynthetic electron transport by dichlorophenyldimethylurea (DCMU).

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Which of the following genus is/are a spirochete(s)?

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

Borrelia

Leptospira

Spirulina

Treponema

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Which of the following is/are non-membrane bound inclusion bodies?

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Carboxysomes

Cyanophicin granules

Poly-β-hydroxybutyrate granules

Polyphosphate granules

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Which of the following antibiotics is/are isolated from Streptomyces spp.?

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

Gentamicin

Nystatin

Polymixins

Tetracyclines

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Which of the following statements about the primary and secondary adaptive immune responses to an antigen is/are correct?

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IgM antibodies appear first in response to the initial exposure of the antigen.

Majority of the antibodies produced in response to the second exposure of the same antigen are IgM isotype.

Second exposure of the same antigen stimulates production of memory cells.

Primary antibody response has shorter lag phase than secondary antibody response.

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The spontaneous and induced mutations in bacteria can be distinguished by

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

fluctuation test

replica plating

disc diffusion test

use-dilution test

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Which of the following is/are the causative agent(s) of Filariasis?

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

Wuchereria bancrofti

Leishmania donovani

Brugia malayi

Trypanosoma gambiense

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The presence of excess glucose has been known to prevent the induction of lac operon as well as other operon controlling enzymes involved in carbohydrate metabolism in E. coli. Which of the following processes define(s) the phenomenon?

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

Catabolite repression

Attenuation

Glucose effect

Feedback inhibition

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GATE XL format:msq PYQs

Question 53

Question 61

Question 62

Question 79

Question 80

Question 81

Question 82

Question 83

Question 90

Question 98