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Q.21 The precursor molecule for the synthesis of Vitamin D3 in human skin is: Prednisolone 7-dehydrocholesterol Estradiol Isoprene 7-Dehydrocholesterol is the Precursor for Vitamin D3 Synthesis in Human Skin 7-Dehydrocholesterol […]

Q.20 Which of the following is correct about RNA interference (CRNAi)? RNAi take place in all prokaryotic organisms as a method of cellular defense. RNAi involves silencing of a specific […]

Q.19 In chloroplast, ATP generation by chemiosmosis mechanism involves: The diffusion of hydrogen ions from stroma to stroma in the presence of light The diffusion of hydrogen ions from thylakoid […]

Q.18 Which microorganism produces dextran? Clostridium acetobutylicum Leuconostoc mesenteroides Bacillus subtilis Enterobacter aerogenes Leuconostoc mesenteroides Produces Dextran: Correct Microorganism Identified Leuconostoc mesenteroides is the key bacterium that synthesizes dextran, an […]

Q.17 Which molecule, ATP does not donate? (1) Phosphoryl groups (2) Deoxyribosyl group (3) Phosphoryl groups (4) Adenylyl groups ATP Does Not Donate Deoxyribosyl Group: Molecular Donation Explained ATP donates […]

Q.16 What is the composition of membrane attack complex in complement systems? C1 – C2 – C9 – C3 – C6 – C7 C5b – C3b – C2 – C5a […]

Q.15 Self incompatibility prevents self fertilization and this mechanism involves: S₁ – pollen grain from an S₁ S₂ parental sporophyte cannot fertilize eggs of an S₁ S₂ flower S₁ – […]

Q.14 In Bryophytes: Sporophyte is fully or partially dependent on gametophytes Xylem and phloem are the main water and food conducting tissues Spore dispersal takes place by means of peristomial […]

Q.13 Which one of the following statement is incorrect about gel electrophoresis? Proteins or nucleic acid fragments are separated based on their net charges and mass Differential migration of these […]

Q.12 The polar head group in sphingomyelins is composed of: Glycerol or ethanolamine Serine or glycerol Phosphocholine or phosphoethanolamine Cholesterol or sterol Sphingomyelins feature phosphocholine or phosphoethanolamine as their polar […]