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Q51. A sign is hammered into a tree trunk 2 meters above the tree’s base. If the tree is 10 meters tall and elongates 1 meter each year, how high […]

Q50. Which of the following statements is CORRECT? (A) Plants adapted to cold environment have higher ratio of “unsaturated to saturated” fatty acids in their membrane compared to those adapted […]

Q49. Arabidopsis and rice have diploid chromosome numbers of 10 and 24, respectively. Assuming no crossing over taking place, genetic variation among F2 individuals in a genetic cross is likely […]

Q48. Which one of the following is NOT a plant hormone? (A) Abscisic acid (B) Brassinosteroid (C) Ethylene (D) Cytokine Answer: (D) Cytokine Cytokines are signaling proteins primarily found in […]

Q47. A population growing exponentially can be described by the differential equation dN/dt = rN, where dN/dt represents the rate of population growth, N is the size of the population, […]

Q46. When changes in the phenotype or gene expression occur without changes in the underlying DNA sequence, the phenomenon is called (A) Mutation (B) Eugenics (C) Epigenetics (D) Epistasis The […]

Q45. Match the metabolic pathways in Group 1 with the corresponding enzymes in Group 2 Group 1 Group 2 P. β-Oxidation Q. Glycolysis R. Gluconeogenesis S. Calvin cycle 1. Ribulose […]

Q44. The metabolic disorders, Alkaptonuria and Phenylketonuria are caused by defects in the enzymes P. Glucose-6-phosphatase Q. Phenylalanine hydroxylase R. Homogentisate 1,2-dioxygenase S. Tyrosinase (A) Q, R (B) P, R […]

Q43. Match the proteins in Group 1 with their correct functions in Group 2 Group 1 Group 2 P. Shaker protein Q. Bacteriorhodopsin R. Porin S. ABC transporter 1. Inner […]

Q42. The rise per residue of α-helix is about 1.5 Å. A protein spans 4 nm bilayer 7 times through its transmembrane α-helical domain. Approximately, how many amino acid residues […]