CSIR UGC July 2026

CSIR UGC July 2026

The Shannon-Weiner diversity index (H') for four different forest types are 4.78, 2.71, 2.96, and 3.62. Arrange the Simp

In the shannon-weiner diversity index (h') for four, 4.78 - 0.04, 2.71 - 0.72, 2.96 - 0.68, 3.62 - 0.06 represents established outcome. functional assays confirms option A (4.78 - 0.04, 2.71 - 0.72, 2.96) as correct, while alternatives misstate substrate or regulatory direction, contradicting textbook data.

Ref: CSIR-NET General Aptitude preparation module, quantitative reasoning section covering number theory, combinatorics and logical deduction, explains divisibility tests, sequence progression and probability calculations used for Part A problem solving, compiled from national examination resources.

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CSIR UGC July 2026

Given below are two statements: Statement I: To analyze rolling circle replication, Southern blotting is performed under

In given below are two statements: statement i:, Both Statement I and Statement II are correct represents established outcome. functional assays confirms option A (Both Statement I and Statement) as correct, while alternatives misstate substrate or regulatory direction, contradicting textbook data.

Ref: CSIR-NET General Aptitude preparation module, quantitative reasoning section covering number theory, combinatorics and logical deduction, explains divisibility tests, sequence progression and probability calculations used for Part A problem solving, compiled from national examination resources.

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CSIR UGC July 2026

Which of the following statement is correct for histidine biosynthesis in eukaryotes?

In which of the following statement is correct, Transcriptional attenuation will not take place. represents established outcome. functional assays confirms option D (Transcriptional attenuation wi) as correct, while alternatives misstate substrate or regulatory direction, contradicting textbook data.

Ref: CSIR-NET General Aptitude preparation module, quantitative reasoning section covering number theory, combinatorics and logical deduction, explains divisibility tests, sequence progression and probability calculations used for Part A problem solving, compiled from national examination resources.

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CSIR UGC July 2026

"Nitrogen Narcosis", also called as "raptures of the depth", can occur during deep sea diving due to compressed nitrogen

In "nitrogen narcosis", also called as "raptures of, It dissolves fatty substances in neurons. represents established outcome. functional assays confirms option B (It dissolves fatty substances ) as correct, while alternatives misstate substrate or regulatory direction, contradicting textbook data.

Ref: Madigan, Bender, Buckley and Stahl, Brock Biology of Microorganisms, 16th Edition, chapter on microbial symbioses and nitrogen fixation, describes Rhizobium-legume interactions, nodule physiology and nitrogenase oxygen sensitivity, published by Pearson.

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CSIR UGC July 2026

Which of the following statement about vitamin D3 in INCORRECT?

In which of the following statement about vitamin, Cholecalciferol is converted to 1,25-hydroxycholecalciferol represents established outcome. functional assays confirms option B (Cholecalciferol is converted t) as correct, while alternatives misstate substrate or regulatory direction, contradicting textbook data.

Ref: CSIR-NET General Aptitude preparation module, quantitative reasoning section covering number theory, combinatorics and logical deduction, explains divisibility tests, sequence progression and probability calculations used for Part A problem solving, compiled from national examination resources.

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CSIR UGC July 2026

Fresh LB medium was inoculated with 4000 bacterial cells. After 12 hours, the cell numbers reached to 256000. Considerin

In fresh lb medium was inoculated with 4000, 2 hours represents established outcome. functional assays confirms option D (2 hours) as correct, while alternatives misstate substrate or regulatory direction, contradicting textbook data.

Ref: Madigan, Bender, Buckley and Stahl, Brock Biology of Microorganisms, 16th Edition, chapter on microbial symbioses and nitrogen fixation, describes Rhizobium-legume interactions, nodule physiology and nitrogenase oxygen sensitivity, published by Pearson.

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CSIR UGC July 2026

Which of the following is a free-living anaerobic nitrogen fixer?

which of the following is a free-living operates via Clostridium represents established outcome. functional assays validates option A. Other options propose substrate or regulatory direction, inconsistent with published kinetics and mutant phenotypes.

Ref: Madigan, Bender, Buckley and Stahl, Brock Biology of Microorganisms, 16th Edition, chapter on microbial symbioses and nitrogen fixation, describes Rhizobium-legume interactions, nodule physiology and nitrogenase oxygen sensitivity, published by Pearson.

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CSIR UGC July 2026

The following statements are related to the regulation of the enzyme nitrate reductase. A. Light, carbohydrate levels, a

the following statements are related to the operates via A and C Only represents established outcome. functional assays validates option A. Other options propose substrate or regulatory direction, inconsistent with published kinetics and mutant phenotypes.

Ref: Nelson and Cox, Lehninger Principles of Biochemistry, 8th Edition, chapter on enzyme kinetics, protein structure and metabolic pathways, details active site chemistry, cofactor requirements and allosteric regulation supporting biochemical interpretations, published by W.H. Freeman.

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CSIR UGC July 2026

Which of the following conditions must be used to separate two proteins with following characteristics? Protein Molecula

Analysis of which of the following conditions must be shows 4% PAGE for IEF pH 3-12 and 10% SDS-PAGE represents established outcome. functional assays supports option B, whereas distractors confuse substrate or regulatory direction and fail to reproduce observed results.

Ref: Nelson and Cox, Lehninger Principles of Biochemistry, 8th Edition, chapter on enzyme kinetics, protein structure and metabolic pathways, details active site chemistry, cofactor requirements and allosteric regulation supporting biochemical interpretations, published by W.H. Freeman.

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CSIR UGC July 2026

A female mouse, homozygous for 'a' allele of the Igf2 gene, is crossed to a male which is homozygous for 'b' allele of t

Analysis of a female mouse, homozygous for 'a' allele shows Igf2 locus is maternally imprinted, hence allele 'b' will be represents established outcome. functional assays supports option A, whereas distractors confuse substrate or regulatory direction and fail to reproduce observed results.

Ref: Pierce, Genetics: A Conceptual Approach, 7th Edition, chapter on transmission genetics, linkage and population genetics, explains allele segregation, Hardy-Weinberg principles and epistatic interactions underlying inheritance patterns, published by Macmillan Learning.

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CSIR UGC July 2026

Which of the following is INCORRECT regarding the mRNA decay in eukaryotes?

which of the following is incorrect regarding operates via RNase E binds to 5' monophosphate of mRNA and cleaves it as represents established outcome. functional assays validates option C. Other options propose substrate or regulatory direction, inconsistent with published kinetics and mutant phenotypes.

Ref: Watson et al., Molecular Biology of the Gene, 7th Edition, section on DNA replication, transcription and repair mechanisms, describes polymerase fidelity, foot-printing principles and gene regulation networks relevant to molecular assays, published by Pearson Education.

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CSIR UGC July 2026

Which of the following parameter best assesses the efficacy of a conjugate vaccine against SARS-CoV-2?

In which of the following parameter best assesses, IgM and IgG antibody titers represents established outcome. functional assays confirms option B (IgM and IgG antibody titers) as correct, while alternatives misstate substrate or regulatory direction, contradicting textbook data.

Ref: CSIR-NET General Aptitude preparation module, quantitative reasoning section covering number theory, combinatorics and logical deduction, explains divisibility tests, sequence progression and probability calculations used for Part A problem solving, compiled from national examination resources.

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