Blog

Q.52 Which of the following factors can affect the growth of a microbial culture in a batch cultivation process? (A) pH of the medium (B) Osmolarity of the medium (C) […]

Q.51 Which of the following conditions induce(s) the expression of β-galactosidase gene in the lac operon? (A) Absence of glucose (B) Absence of lactose (C) Presence of glucose (D) Presence […]

Q.50 Which of the following statements regarding the below mentioned mRNA sequence is/are TRUE? 5`-UGAUGAGCCUUAACCGGGAACGAAUUUAAG-3` (A) It contains nine codons in the reading frame (B) It contains ten codons in […]

Q.49 Which of the following is/are synthetic auxin(s) that does/do NOT occur naturally? (A) 2,4-Dichlorophenoxyacetic acid (B) Indole-3-acetic acid (C) Indole-3-butyric acid (D) 1-Naphthaleneacetic acid Synthetic Auxins in Plant Biology: […]

Q.48 Under which of the following conditions, a mammalian somatic cell fails to undergo mitosis during cell cycle? (A) Initiation of cell plate formation (B) Incomplete DNA replication (C) Chiasmata […]

Q.47 Which of the following is/are considered as biotic elicitor(s) in plant cell culture? (A) Cellulase (B) Chitin (C) Chitosan (D) Mercuric chloride Biotic elicitors trigger defense responses in plant […]

Q.46 Which of the following features help(s) in distinguishing alleles using restriction fragment length polymorphism (RFLP)? (A) Differences in the number of recognition sites for a given restriction enzyme (B) […]

Q.45 Which of the following plant-based secondary metabolites belong(s) to the class of alkaloids? (A) Ajmalicine (C21H24N2O3) (B) Azadirachtin (C35H44O16) (C) Camptothecin (C20H16N2O4) (D) Vinblastine (C46H58N4O9) Identifying Ajmalicine, Camptothecin, Vinblastine, […]

Q.44 Which of the following statements is/are correct about an uncompetitive inhibitor of an enzyme? (A) It binds to the substrate binding site of the enzyme only (B) It binds […]

Q.43 The evolution of wings in bats and insects is an example of ________ evolution. (A) convergent (B) divergent (C) neutral (D) parallel The evolution of wings in bats and […]