InterviewSolution
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InterviewSolution
This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.
| 351. |
Diminished flow of blood to tissues is termed as ___________(a) Hypoxia(b) Ischemia(c) Homeostasis(d) Metabolism |
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Answer» The correct answer is (b) Ischemia To explain: Diminished flow of blood to tissues is termed as ischemia. |
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| 352. |
Which of the following are found in connective tissues?(a) Glycosaminoglycans(b) Proteoglycans(c) Glycoproteins(d) Glycolipids |
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Answer» Correct choice is (b) Proteoglycans To explain: Proteoglycans are found in all connective tissues, extracellular matrix and on the surface of many cell surfaces. |
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| 353. |
Steroid hormones receptor binds to _____________(a) Hormone response elements in m-RNA(b) Hormone response elements in DNA(c) Hormone response elements in proteins(d) Ribosomes to stimulate translation |
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Answer» Right option is (b) Hormone response elements in DNA Best explanation: Hormone response elements are short sequence of DNA where steroid hormone receptors bind. |
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| 354. |
In Arabidopsis flg22 binds to _________(a) FLS2(b) LPS(c) BAK1(d) MAPK |
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Answer» The correct answer is (a) FLS2 Easiest explanation: flg22 present in plants binds to FLS2. |
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| 355. |
Which of the following statements about Arabidopsis is not true?(a) In Arabidopsis, CTR-1 Ser/Thr protein kinase is activated by ethylene(b) Activation of MAPK cascade(c) EINI activation(d) Synthesis of ERF1 transcription factor |
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Answer» The correct choice is (a) In Arabidopsis, CTR-1 Ser/Thr protein kinase is activated by ethylene Best explanation: In Arabidopsis, CTR-1 Ser/Thr protein kinase is inactivated by ethylene. |
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| 356. |
In which type of chromatography lipids are carried up a silica gel coated pate by a rising solvent front, less polar travels farther than the more polar ones?(a) Absorption chromatography(b) Thin layer chromatography(c) Gas-liquid chromatography(d) HPLC |
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Answer» The correct answer is (b) Thin layer chromatography Explanation: In TLC, lipids are carried up a silica gel coated pate by a rising solvent front, less polar travels farther than the more polar ones. |
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| 357. |
The antibody present in secretions like tears and saliva is ____________(a) IgA(b) IgE(c) IgG(d) IgM |
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Answer» The correct answer is (a) IgA For explanation: Secretory IgA is the main antibody present in mucous secretions and other secretions like tears and saliva. |
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| 358. |
Which of the following is a storage form of lipid?(a) Glycolipid(b) Phospholipid(c) Sufolipid(d) Triacyl glycerol |
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Answer» Right choice is (d) Triacyl glycerol To elaborate: Triacyl glycerol is the storage form of lipids. |
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| 359. |
Which of the following are the storage polysaccharides?(a) Glycogen(b) Cellulose(c) Chitin(d) Glucose |
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Answer» Correct choice is (a) Glycogen Explanation: Starch and glycogen are known as storage polysaccharides. |
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| 360. |
For the determination of fatty acid composition, transesterification is done in a warm aqueous solution of __________(a) KCl+methanol(b) KOH+methanol(c) NaOH+methanol(d) H2O+methanol |
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Answer» Correct answer is (c) NaOH+methanol Explanation: In a warm solution of methanol+HCl or methanol+NaOH, transesterification is done. |
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| 361. |
Which of the following is important in signal transduction triggered by hormones?(a) Phosphatidylinositol and its derivatives(b) Phosphatidylserine and its derivatives(c) Phosphatidylglycerol and its derivatives(d) Phosphatidylethanolamine |
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Answer» Correct option is (a) Phosphatidylinositol and its derivatives Easiest explanation: Phosphatidylinositol and its derivatives are important in signal transduction triggered by hormones. |
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| 362. |
Objects are perceived by photo receptors because rods or cones(a) Depolarize(b) Hyperpolarize(c) Repolarize(d) Polarize |
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Answer» The correct choice is (b) Hyperpolarize To explain: The objects are perceived by photo receptors because rods or cones hyperpolarize as their pigments may decompose in presence of light. |
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| 363. |
Which out of the following is not involved in signal transduction by β-adrenergic receptor pathway?(a) GTP(b) ATP(c) cAMP(d) cGMP |
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Answer» Right answer is (c) cAMP For explanation: cAMP is not involved in signal transduction by β-adrenergic receptor pathway. |
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| 364. |
Which of the following is involved in extrinsic cell death pathway?(a) Heterotrimeric G protein complex(b) TRADD(c) IRS-1(d) Protein-kinase A |
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Answer» Correct choice is (b) TRADD The best I can explain: TRADD, tumor necrosis factor receptor type 1-associated death domain protein is involved in extrinsic cell death pathway. |
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| 365. |
A hormone or ligand can be considered as ___________(a) First messenger(b) Second messenger(c) Third messenger(d) Fourth messenger |
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Answer» Correct answer is (a) First messenger The explanation is: Hormones are often considered to be first messengers, IP3, cAMP and cGMP are considered to be second messengers. |
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| 366. |
The binding of ligands to many GPCRs leads to ___________(a) Decrease in concentration of certain intracellular signal molecules called second messengers(b) Increase in concentration of certain intracellular signal molecules called second messengers(c) Decrease in concentration of certain extracellular signal molecules called first messengers(d) Increase in concentration of certain extracellular signal molecules called first messengers |
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Answer» Right option is (a) Decrease in concentration of certain intracellular signal molecules called second messengers For explanation: The binding of ligands to many GPCRs leads to decrease in concentration of second messengers. |
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| 367. |
Important buffer system of extracellular fluid is (A) Bicarbonate/carbonic acid (B) Disodium hydrogen phosphate/sodium dihydrogen phosphate (C) Plasma proteins (D) Organic Phosphate |
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Answer» Important buffer system of extracellular fluid is bicarbonate/carbonic acid. |
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| 368. |
Receptor is removed from cell surface in _____________(a) Specificity(b) Amplification(c) Adaptation(d) Integration |
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Answer» Correct answer is (c) Adaptation The best explanation: A regulatory outcome result from integrated input from both receptors is in integration. Signal molecule fits its binding site on its complementary receptor called as specificity. Number of affected molecules increases geometrically in an enzyme cascade in amplification. |
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| 369. |
Which of the following is a nuclear receptor protein?(a) Steroid receptor(b) Adhesion receptor(c) Serpentine receptor(d) Receptor with no intrinsic enzyme activity |
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Answer» The correct choice is (a) Steroid receptor Easiest explanation: Steroid receptor is a nuclear receptor protein. |
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| 370. |
The receptor channels for which of the following are gated by extracellular ligands?(a) Glycine(b) IP3(c) cAMP(d) cGMP |
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Answer» Correct answer is (a) Glycine To explain: The receptor channels for glycine are gated by extracellular ligands. |
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| 371. |
Which of the following statements is false about a ligand-gated ion channel receptor?(a) They are present in the cell membrane(b) They consist of five glycoproteins(c) Differences in membrane potential affect whether the channel receptors are open or close(d) Neurotransmitters can act as the chemical messengers for these channels |
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Answer» Right choice is (c) Differences in membrane potential affect whether the channel receptors are open or close To explain: Ligands affect whether the channel receptors are open or close in a ligand-gated ion channel whereas voltage gated ion channels are controlled by the differences in membrane potential affect. |
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| 372. |
Photosynthesis takes place in sac like membranes called ___________(a) Thylakoids(b) Grana(c) Photosystems(d) Photons |
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Answer» Correct choice is (a) Thylakoids The explanation is: Photosynthesis takes place in thylakoid structures. |
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| 373. |
Which of the following is true about the enzyme producing NADH from a triose phosphate in the glycolytic pathway?(a) It produces 1, 3-biphosphoglycerate and NADH(b) It catalyzes irreversible reaction(c) It uses NAD^+ and dihydroxyacetone phosphate as substrates(d) It uses FADH2 and glyceraldehyde 3-phosphate as substrates |
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Answer» Right answer is (a) It produces 1, 3-biphosphoglycerate and NADH Easiest explanation: Triose phosphate, glyceraldehyde 3-phosphate is oxidized to 1, 3-biphosphoglycerate in the presence of dehydrogenase enzyme. |
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| 374. |
Which of the following enzymes catalyze the ADP-ribosylation of key cellular enzymes or proteins?(a) Diphteria toxin and cholera toxin(b) Dinitrogenase reductase(c) Protein phosphatases(d) Kinase |
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Answer» The correct choice is (a) Diphteria toxin and cholera toxin To elaborate: The enzymes that catalyse the ADP-ribosylation and inactivation of key cellular enzymes or proteins are diphteria toxin and cholera toxin. |
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| 375. |
The digestive enzymes of cellular compounds are confined to (A) Lysosomes (B) Ribosomes (C) Peroxisomes(D) Polysomes |
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Answer» The digestive enzymes of cellular compounds are confined to Lysosomes. |
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| 376. |
Which is an example of chemical to electromagnetic energy conversion that occurs in living organisms?(a) ATP-driven muscle contraction(b) ATP-dependent photon emission in fireflies(c) light-induced electron flow in chloroplasts(d) ATP-driven active transport across a membrane |
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Answer» Correct choice is (b) ATP-dependent photon emission in fireflies For explanation I would say: ATP-driven muscle contraction is an example for chemical to mechanical energy conversion. Light-induced electron flow in chloroplasts is an example for electromagnetic to electrical energy conversion. ATP-driven active transport across a membrane is an example for chemical to osmotic energy conversion. |
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| 377. |
Which is an example of chemical to mechanical energy conversion that occurs in living organisms?(a) ATP-driven muscle contraction(b) ATP-dependent photon emission in fireflies(c) light-induced electron flow in chloroplasts(d) ATP-driven active transport across a membrane |
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Answer» Right choice is (a) ATP-driven muscle contraction The best I can explain: ATP-dependent photon emission in fireflies is an example for chemical to electromagnetic energy conversion. Light-induced electron flow in chloroplasts is an example for electromagnetic to electrical energy conversion. ATP-driven active transport across a membrane is an example for chemical to osmotic energy conversion. |
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| 378. |
Cleavage of Fructose 1, 6-biophosphate yields ___________(a) Two aldoses(b) Two ketoses(c) An aldose and a ketose(d) Only a ketose |
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Answer» Right option is (c) An aldose and a ketose Explanation: Fructose 1, 6-biophosphate is cleaved to yield glyceraldehyde 3-phosphate, an aldehyde and dihydroxyacetone phosphate, a ketose. |
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| 379. |
Dihydroxyacetone phosphate is rapidly and reversibly converted to ___________(a) Glyceraldehyde 3-phosphate(b) 1, 3-bis-phosphoglycerate(c) Fructose 1, 6-bisphosphate(d) Fructose 6-phosphate |
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Answer» The correct option is (a) Glyceraldehyde 3-phosphate To explain: Dihydroxyacetone phosphate is rapidly and reversibly converted to glyceraldehyde 3-phosphate by triose phosphate isomerase. |
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| 380. |
Which of the following statements is false?(a) Primary structure of a protein determines how it folds up into a unique three dimensional structure(b) Secondary structure of a protein determines how it folds up into a unique three dimensional structure(c) Three dimensional structure of a protein determines the function of a protein(d) Amino acid sequence is absolutely invariant for a particular protein |
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Answer» The correct choice is (b) Secondary structure of a protein determines how it folds up into a unique three dimensional structure The best I can explain: Primary structure of a protein determines how it folds up into a unique three dimensional structure, which in turn determines the function of a protein. |
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