This set of Biochemistry Multiple Choice Questions & Answers (MCQs) focuses on “Working with Proteins”. 1. The salt which produces salting out effect during extraction of proteins is? a) NH4 SO4 b) (NH4)2 SO4 c) (NH4)3 SO4 d) NaCl 2. Mobile phase can be ___________ a) Only solid b) Only gas c) Solid or liquid … Read more
This set of Biochemistry Multiple Choice Questions & Answers (MCQs) focuses on “Peptides and Proteins”. 1. During the formation of the peptide bond which of the following takes place? a) Hydroxyl group is lost from its carboxyl group of one amino acid and a hydrogen atom is lost from its amino group of another amino … Read more
This set of Biochemistry Multiple Choice Questions & Answers (MCQs) focuses on “Amino Acids”. 1. Identify the amino acids containing nonpolar, aliphatic R groups. a) Phenylalanine, tyrosine, and tryptophan b) Glycine, alanine, leucine c) Lysine, arginine, histidine d) Serine, threonine, cysteine 2. The two amino acids having R groups with a negative net charge at … Read more
This set of Biochemistry Multiple Choice Questions & Answers (MCQs) focuses on “Water as a Reactant”. 1. The processes i and ii are respectively. i) CuSO4 + 5H2O CuSO4.5H2O ii) PCl3 + 3H2O H3PO3 + 3HCl a) Hydration and dehydration b) Hydration and hydrolysis c) Hydrolysis and hydrolysis d) Hydration and hydration 2. Which of … Read more
This set of Biochemistry Questions and Answers for Freshers focuses on “Buffering against pH changes in Biological Systems”. 1. Which can act as buffer? a) NH4 Cl + HCl b) CH3 COOH + H2 CO3 c) 40ml of 0.1M NaCN + 20ml of 0.1M HCN d) NaCl + NaOH 2. Calculate the pH of a … Read more
This set of Biochemistry Interview Questions and Answers focuses on “Ionization of Water, Weak acids and Weak Bases”. 1. What is the concentration of OH– in a solution with a H+ concentration of 1.3×10-4 M? a) 7.7×10-10 M b) 7.7×10-9 M c) 7.7×10-11 M d) 7.7×10-12 M 2. Identify the triprotic acid from the following. … Read more
This set of Biochemistry Multiple Choice Questions & Answers (MCQs) focuses on “Weak Interactions in Aqueous Systems”. 1. What makes water a liquid at room temperature? a) Hydrogen bonds between water molecules b) Covalent bonding c) Noncovalent interactions d) Van der Waals forces of attraction 2. ΔG is negative for which of the following processes? … Read more
