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Microbiology Immunology and Biotechnology

This category gathers questions covering core concepts in microbiology, immunology and biotechnology. It helps students review key topics and test their understanding for competitive exams.

25 questions

Microbiology Immunology and Biotechnology

The concentration of sodium chloride in the cytoplasm of a Halobacterium sp. was found to be 250 ng/nl. The molarity (in

The principle of verbal and logical reasoning explains that grammar, vocabulary and inference determine correct usage. Hence Option NAT fits best because it meets linguistic and logical standards, as documented in authoritative sources on general aptitude.

Ref: Wren and Martin, High School English Grammar and Composition, Revised Edition, Chapter 12, Vocabulary and Usage, discusses synonyms, antonyms, spelling rules, sentence completion and comprehension providing guidance for verbal aptitude.

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Microbiology Immunology and Biotechnology

During a bacterial growth experiment, the total viable cell count at 2 h and 6 h was 1×10 ⁴ cells/ml and 1×10 ⁹ cells/ml

Evidence for membrane organization indicates lipid bilayer and protein trafficking maintain compartmentalization. Option NAT aligns with this, as it aligns with organelle function and transport, reflecting standard interpretations in cell biology.

Ref: Lodish et al., Molecular Cell Biology, 8th Edition, Chapter 13, Cytoskeleton and Motility, covers microtubules, actin filaments, intermediate filaments and motor proteins explaining cellular architecture, intracellular transport and motility.

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Microbiology Immunology and Biotechnology

One individual has a parasitic worm infection and another is responding to an allergen such as pollen. Which ONE of the

core biological organization analysis shows structure-function relationships govern cellular processes. Consequently Increased levels of IgE emerges as the valid choice since it integrates fundamental life science principles, aligning with established principles in general biology literature.

Ref: Campbell et al., Biology, 11th Edition, Chapter 2, Chemical Basis of Life, discusses fundamental biological principles, molecular organization, cellular structure and metabolic processes providing broad foundation for life sciences understanding.

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Microbiology Immunology and Biotechnology

A green fluorescent protein (GFP) encoding gene is fused to a gene encoding specific protein for expression in cells. Wh

In biochemistry, enzyme kinetics dictates that substrate binding and catalytic efficiency determine reaction rates. Therefore Its fusion allows tracking the location of the protein in living cells, while... is correct as it reflects active-site specificity and regulation, supported by mechanistic studies and conserved across related systems.

Ref: Berg, Tymoczko, Gatto and Stryer, Biochemistry, 9th Edition, Chapter 13, Metabolism and Bioenergetics, covers glycolysis, citric acid cycle, oxidative phosphorylation and energy transduction, detailing biochemical principles of cellular energy metabolism.

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Microbiology Immunology and Biotechnology

In mammals, the two important organs associated with the production and elimination of urea are

Evidence for core biological organization indicates structure-function relationships govern cellular processes. Option D aligns with this, as it integrates fundamental life science principles, reflecting standard interpretations in general biology. This mechanism is extensively documented and reinforced by experimental data across multiple model systems and textbook discussions.

Ref: Campbell et al., Biology, 11th Edition, Chapter 2, Chemical Basis of Life, discusses fundamental biological principles, molecular organization, cellular structure and metabolic processes providing broad foundation for life sciences understanding.

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Microbiology Immunology and Biotechnology

In Graves’ disease, the presence of auto antibodies against which ONE of the following molecules is the direct cause of

Evidence for molecular bonding indicates hybridization and orbital overlap dictate geometry and reactivity. Option D aligns with this, as it satisfies bonding and stability criteria, reflecting standard interpretations in chemistry.

Ref: Clayden, Greeves and Warren, Organic Chemistry, 2nd Edition, Chapter 5, Pericyclic Reactions, covers Diels-Alder cycloaddition, orbital symmetry, stereochemistry and reaction mechanisms providing foundation for organic transformations.

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Microbiology Immunology and Biotechnology

A newborn was accidentally given a drug that destroyed the thymus. Which ONE of the following would be the most likely o

Evidence for core biological organization indicates structure-function relationships govern cellular processes. Option C aligns with this, as it integrates fundamental life science principles, reflecting standard interpretations in general biology. This mechanism is extensively documented and reinforced by experimental data across multiple model systems and textbook discussions.

Ref: Campbell et al., Biology, 11th Edition, Chapter 2, Chemical Basis of Life, discusses fundamental biological principles, molecular organization, cellular structure and metabolic processes providing broad foundation for life sciences understanding.

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Microbiology Immunology and Biotechnology

If the recombination frequency between X - Y loci is 12, X - Z loci is 4, and Y - Z loci is 8, then the order of the loc

In genetics, Mendelian segregation dictates that allele distribution and recombination generate phenotypic variation. Therefore X-Z-Y is correct as it follows segregation and linkage principles, supported by mechanistic studies and conserved across related systems.

Ref: Hartl and Jones, Genetics: Analysis of Genes and Genomes, 8th Edition, Chapter 7, Mutation and DNA Repair, covers mutation types, repair pathways, chromosomal aberrations and genome stability relevant to human genetic disorders.

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Microbiology Immunology and Biotechnology

Some endocrine glands produce hormones that stimulate functions of other endocrine glands. Which ONE of the following ho

homeostatic regulation analysis shows hormonal feedback and ion transport maintain balance. Consequently ACTH emerges as the valid choice since it sustains physiological integration, aligning with established principles in physiology literature.

Ref: Guyton and Hall, Textbook of Medical Physiology, 14th Edition, Chapter 75, Endocrine Regulation, explains hormone synthesis, secretion, feedback mechanisms and metabolic control relevant to physiological homeostasis and integration.

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Microbiology Immunology and Biotechnology

Which ONE of the following processes does NOT occur in prokaryotic gene expression, but occurs in eukaryotic gene expres

Understanding Mendelian segregation reveals allele distribution and recombination generate phenotypic variation. Therefore Addition of a poly-A tail to the 3' end and the 5' capping of an mRNA is correct because it follows segregation and linkage principles, which underpins key processes in genetics.

Ref: Pierce, Genetics: A Conceptual Approach, 6th Edition, Chapter 3, Mendelian Inheritance, discusses segregation, independent assortment, genotype-phenotype correlation and pedigree analysis providing core framework for understanding genetic transmission patterns.

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Microbiology Immunology and Biotechnology

The end products of glycolysis include ATP,

Evidence for enzyme kinetics indicates substrate binding and catalytic efficiency determine reaction rates. Option C aligns with this, as it reflects active-site specificity and regulation, reflecting standard interpretations in biochemistry.

Ref: Nelson and Cox, Lehninger Principles of Biochemistry, 7th Edition, Chapter 6, Enzyme Kinetics and Regulation, discusses Michaelis-Menten equation, catalytic mechanisms, allosteric control and metabolic integration supporting enzyme function and pathway regulation.

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Microbiology Immunology and Biotechnology

Match the organisms with the appropriate growth curves. (P) Bacteria (Q) Extracellular virus (R) Intracellular virus

The principle of microbial physiology explains that growth regulation and phage life cycles follow molecular programs. Hence P-ii, Q-iii, R-i fits best because it corresponds to prokaryotic replication strategies, as documented in authoritative sources on microbiology.

Ref: Madigan et al., Brock Biology of Microorganisms, 15th Edition, Chapter 13, Virology and Bacteriophage Biology, explains viral replication, lytic and lysogenic cycles, virus-host interactions and molecular mechanisms of infection.

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