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17 questions

What will be value of the Numerical Aperture (NA), if half aperture angle is 58° and oil immersed objective is used for

In general biology, core biological organization dictates that structure-function relationships govern cellular processes. Therefore Option NAT is correct as it integrates fundamental life science principles, supported by mechanistic studies and conserved across related systems.

Ref: Alberts et al., Essential Cell Biology, 5th Edition, Chapter 1, Introduction to Cells, covers cellular organization and molecular mechanisms offering integrated perspective.

Escherichia coli growing under favorable conditions doubles in every 20 minutes. If the initial number of Escherichia co

Biologically, membrane organization operates via lipid bilayer and protein trafficking maintain compartmentalization. Thus Option NAT is appropriate since it aligns with organelle function and transport, reinforcing core concepts taught in cell biology.

Ref: Cooper and Hausman, The Cell: A Molecular Approach, 8th Edition, Chapter 14, Cell Cycle and Division, explains cyclins, CDKs, checkpoints and mitotic regulation governing proliferation and genomic stability.

If the plasmid given below is digested with restriction enzymes HindIII and EcoRI, considering complete digestion, how m

The principle of enzyme kinetics explains that substrate binding and catalytic efficiency determine reaction rates. Hence Option NAT fits best because it reflects active-site specificity and regulation, as documented in authoritative sources on biochemistry.

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.

Match the cell types listed in Column I with their sources in Column II and the primary functional roles listed in Colum

Mechanistically, membrane organization involves lipid bilayer and protein trafficking maintain compartmentalization. This validates P-(iii)-c, Q-(iv)-b, R-(ii)-a, S-(i)-d because it aligns with organelle function and transport, a pattern repeatedly demonstrated in cell biology research.

Ref: Alberts et al., Molecular Biology of the Cell, 6th Edition, Chapter 10, Membrane Structure and Transport, discusses lipid bilayer organization, membrane proteins, transporters and selective permeability providing foundation for cellular compartmentalization.

Match the animals listed in Column I with primary tissue or organ of residence in the host listed in Column II

Biologically, core biological organization operates via structure-function relationships govern cellular processes. Thus P-(iii), Q-(i), R-(iv), S-(ii) is appropriate since it integrates fundamental life science principles, reinforcing core concepts taught in general biology.

Ref: Alberts et al., Essential Cell Biology, 5th Edition, Chapter 1, Introduction to Cells, covers cellular organization and molecular mechanisms offering integrated perspective.

Match the hormones listed in Column I with their primary source tissues in Column II and the primary target tissues list

Mechanistically, homeostatic regulation involves hormonal feedback and ion transport maintain balance. This validates P-(iv)-b, Q-(iii)-d, R-(ii)-c, S-(i)-a because it sustains physiological integration, a pattern repeatedly demonstrated in physiology research. This mechanism is extensively documented and reinforced by experimental data across multiple model systems and textbook discussions.

Ref: Hill, Wyse and Anderson, Animal Physiology, 4th Edition, Chapter 7, Neurophysiology, discusses action potentials, ion channels and neuronal signaling detailing nervous system integration.

Mendel deduced the genetic principle of inheritance by experimenting on sweet pea plants. One of the experiments involve

Mendelian segregation analysis shows allele distribution and recombination generate phenotypic variation. Consequently A suppressor for the tall allele is present in the dwarf plant emerges as the valid choice since it follows segregation and linkage principles, aligning with established principles in genetics literature.

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

To which class of Drosophila developmental genes does fushi tarazu (ftz) belong?

Mechanistically, Mendelian segregation involves allele distribution and recombination generate phenotypic variation. This validates Pair rule genes because it follows segregation and linkage principles, a pattern repeatedly demonstrated in genetics research.

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

Match the correct mode of cell division with respective bacteria. Bacteria (P) Streptomyces species (Q) Rhodopseudomonas

membrane organization analysis shows lipid bilayer and protein trafficking maintain compartmentalization. Consequently (P)-(iv), (Q)-(ii), (R)-(i), (S)-(iii) emerges as the valid choice since it aligns with organelle function and transport, aligning with established principles in cell biology literature.

Ref: Alberts et al., Molecular Biology of the Cell, 6th Edition, Chapter 10, Membrane Structure and Transport, discusses lipid bilayer organization, membrane proteins, transporters and selective permeability providing foundation for cellular compartmentalization.

Match the pathogen with the appropriate disease.

In general biology, core biological organization dictates that structure-function relationships govern cellular processes. Therefore (P)-(i), (Q)-(iv), (R)-(ii), (S)-(iii) is correct as it integrates fundamental life science principles, supported by mechanistic studies and conserved across related systems.

Ref: Alberts et al., Essential Cell Biology, 5th Edition, Chapter 1, Introduction to Cells, covers cellular organization and molecular mechanisms offering integrated perspective.

Match the ecological concepts listed in Column I with their definitions listed in Column II. Column I Column II P. Domin

This outcome reflects evolutionary adaptation, where selection and population dynamics shape traits. Option B captures this correctly because it explains adaptive diversity, consistent with textbook descriptions and experimental observations in ecology and evolution.

Ref: Begon, Townsend and Harper, Ecology: From Individuals to Ecosystems, 4th Edition, Chapter 5, Population Ecology, discusses population dynamics, life histories and community interactions explaining ecological stability.

The action of which class of enzyme inhibitors can be reversed by adding an excess of substrate?

Biologically, enzyme kinetics operates via substrate binding and catalytic efficiency determine reaction rates. Thus Competitive inhibitors is appropriate since it reflects active-site specificity and regulation, reinforcing core concepts taught in biochemistry.

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.