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Q.22 Match the pair of orgamisms in Group I with their community interaction pattern in Group II. (A) P-3, Q-1, R-4, S-2 (B) P-3, Q-4, R-1, S-2 (C) P-4, Q-1, […]

Q.21 Two charges 10 × 10-8 C and – 6 ×10-8 C are located 16 cm apart. The point(s) on the line joining the two charges, where the net electric […]

Q.20 The IR stretching frequency of the carbonyl (C=O) group of a typical saturated ketone is 1715 cm-1 . The IR stretching frequencies for the carbonyl groups present in three […]

Q.19 Which of the following cell types is infected by the human immunodeficiency virus-1? (A) T-helper lymphocytes (B) T-cytotoxic lymphocytes (C) Plasma cells (D) B-lymphocytes HIV-1 Targets T-Helper Lymphocytes: MCQ […]

Q.18 The receptors for gamma amino butyric acid (GABA) in humans are (A) ligand gated chloride ion channels (B) ligand gated sodium ion channels (C) ligand gated potassium ion channels […]

Q.17 Which of the following represents the CORRECT order of events in the eukaryotic cell cycle? (A) G1  S  G2  M (B) S  G1  M […]

Q.16 Which of the following statements about eukaryotic asymmetric cell division is NOT correct? (A) Chromosomes are unequally distributed in the daughter cells (B) Chromosomes are equally distributed in the […]

Q.15 The first evidence of ‘gene transfer’ was demonstrated in 1928 by (A) Joshua Lederberg in Escherichia coli (B) Frederick Griffith in Streptococcus pneumoniae (C) Joshua Lederberg in bacteriophages (D) […]

Q.14 The final stage of peptidoglycan (PG) biosynthesis is marked by PG cross-link formation and remodeling. Which of the following enzymes does NOT take part in these processes? (A) Transglycosidases […]