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Q.33 Which of the following statements is/are CORRECT for G protein–coupled receptor (GPCR)mediated signaling?(A) GPCRs contain seven membrane spanning regions.(B) GPCRs are linked to heterotrimeric G protein consisting of α, […]

Q.32 Plasmid mediated antibiotic resistances in bacteria are acquired by(A) hydrolysis by β-lactamase (penicillin resistance).(B) expression of aminoglycoside modifying enzyme (kanamycin resistance).(C) mutation in DNA gyrase (quinolone resistance).(D) overproduction of […]

Q.31 Antibody binds to antigen in solution through(A) ionic interactions. (B) hydrogen bonds.(C) van der Waals interactions. (D) hydrophobic interactions. Antibody-antigen binding in solution involves multiple non-covalent interactions, with no […]

Q.30 In the 1 H NMR spectrum, which one of the following compounds will show a triplet? The compound that shows a clear triplet in its 11H NMR spectrum is option (A), ethyl […]

Q.29 Which one of the following statements is CORRECT?(A) BF3 is a stronger Lewis acid than BI3 .(B) CO and CN– are good π-accepting ligands.(C) cis-Diamminedichloroplatinum (II) has zero dipole […]

Q.28 Match the entries in Group I with those in Group II Group I Group II P) Proline 1) Artificial sweetener Q) Oxytocin 2) Cyclic amino acid R) Aspartame 3) […]

Q.27 The achiral molecules among the following (I, II, III and IV) are (A) I and III (B) II and IV (C) III and IV (D) I and IV The […]

Q.26 Match the entries in Group I (Mechanical system) with analogous quantities in Group II (Electrical system) Group I Group II P) Mass 1) Current Q) Spring constant 2) Voltage […]

Q.25 A 30 μF capacitor is connected to a 240 V, 50 Hz source. If the frequency of the source is changed from 50 Hz to 200 Hz, the capacitive […]

Q.24 Which one of the following shows the CORRECT relationship among velocity of light in a medium (\( v \)), permittivity of medium (\( \varepsilon \)) and magnetic permeability of […]