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Q49 With reference to virulence (vir) genes of wild type Agrobacterium tumefaciens (match Group-I (vir gene) and Group-II (encoded protein) in CORRECT combination. P virA Q virB R virD S […]

Q.48 ‘Quiescent Center’ is present in(A) leaf meristem(B) root apical meristem(C) shoot apical meristem(D) floral meristem The Quiescent Center is present in the root apical meristem. This region consists of slow-dividing […]

Q.47 In Angiosperms, normally ‘Exarch Xylem’ occurs in(A) dicot stem(B) monocot stem(C) dicot root(D) dicot leaf Exarch xylem in angiosperms roots, specifically dicot roots, features protoxylem positioned towards the periphery […]

Q.46 A forty-times diluted sample of ssRNA gave an 𝐴260 of 0.01 . The concentrationof the ssRNA before the dilution in μ𝑔/𝑚𝐿 was _____ (correct to the nearestinteger). The concentration […]

Q.45 The half-maximal velocity of an enzyme catalyzed reaction was found at asubstrate concentration of 0.5 × 10-6 𝑀. This enzyme follows Michaelis-Mentenkinetics. In the presence of a competitive inhibitor, […]

Q.44 The dissociation constant for a receptor-ligand pair is 0.25 × 10-7𝑀 . The ligandwas added to a solution of the receptor such that the receptor was 50% saturatedat equilibrium. […]

Q43 The standard free energy changes for conversion of phosphoenol pyruvate (PEP) to pyruvate, ATP synthesis are shown below. PEP + H₂O ⇌ pyruvate + Pᵢ          […]

Q.42 Which of the following statements about IgA is/are correct?(A) It is secreted into colostrum.(B) It is transported across the cell by transcytosis.(C) Its secretion is facilitated by poly-Ig receptor.(D) […]

Q.41 Which of the following carbohydrates has/have a 𝛽1 → 4 glycosidic linkage?(A) Cellulose(B) Chitin(C) Lactose(D) Maltose Cellulose, chitin, and lactose contain β1→4 glycosidic linkages, while maltose has an α1→4 […]

Q.40 Purification of 6×His-tagged protein using Ni-NTA column is an exampleof ________(A) affinity chromatography(B) hydrophobic-interaction chromatography(C) ion-exchange chromatography(D) size-exclusion chromatography Purification of 6×His-tagged protein using Ni-NTA column is an example […]