Tag: iit jam biotechnology previous year paper PYQ

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 […]

Q.12 Which of the following activities is NOT possessed by the human immunodeficiency virus-1 reverse transcriptase? (A) Synthesis of DNA from RNA (B) Synthesis of DNA from DNA (C) Degradation […]

Q.11 Sequence comparison of which of the following genes is used as a measure of evolutionary divergence across bacterial species? (A) pbpG (B) slyD (C) 16S rRNA (D) 18S rRNA […]

Q.10 An electric circuit with a resistor of constant resistance ‘R’ is maintained at a constant voltage ‘V’. Based on Ohm’s law, if the current ‘I’ through the circuit is […]