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Q.28 Which one of the following statements is CORRECT about Agrobacterium tumefaciens mediated plant transformation? (A) The marker gene for the selection of plant transformant is located outside the T-DNA […]

Q.27 The 5′ cap of eukaryotic mRNAs contains (A) a modified guanine nucleotide (B) a modified adenine nucleotide (C) a modified cytosine nucleotide (D) a modified uracil nucleotide 5′ Cap […]

Q.26 Mechanism of antibacterial action of polymyxins relies on the (A) inhibition of 30S ribosomal subunit (B) disruption of peptidoglycan synthesis (C) inhibition of DNA replication of bacteria (D) disruption […]

Q.25 Which of the following is the CORRECT combination of a synthetic auxin and a synthetic cytokinin? (A) 2,4-Dichlorophenoxy acetic acid (2,4-D) and Indole-3-acetic acid (IAA) (B) 2,4-Dichlorophenoxy acetic acid […]

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 […]