3. Protein X is composed of 700 amino acids. When resolved on denaturing PAGE it shows a band corresponding to 130 kDa. The probable reason for such discrepancy is a. […]
2. Platelets contain a. Both genomic and mitochondrial DNA b. Only mitochondrial DNA c. Only genomic DNA d. No DNA Platelets contain both genomic and mitochondrial DNA, but the majority […]
1. Glucokinase phosphorylates glucose in liver only when glucose levels are higher than normal. What property of glucokinase is responsible for this? a. High molecular weight b. High Km c. […]
15. You are given an oligonucleotide whose molecular weight is 10000 Daltons. Assuming you want to make 100 μl of 100 μM stock how much oligonucleotide would you need? a. […]
14. Labelling of proteins with iodine is used for tracing. Which amino acid does iodine react with. a. Alanine b. Aspartate c. Lysine d. Tyrosine Iodine Labelling of Proteins: Tyrosine […]
13. Which compound is most acidic? a. H2O b. H2S c. H2Se d. NH3 The most acidic compound is H₂Se (option c). Among H₂O, H₂S and H₂Se, acidity increases down […]
12. Consider a reversible reaction 𝐴 ⇌ 𝐵 with forward and backward rate constants 𝑘! = 𝑘! = 1 sec!!. Suppose we start with a 1 molar solution of A. […]
10. Which of the following compounds does not undergo ozonolysis reaction? a. 3-methyl-1-butene b. 2,3-dimethyl-butane c. 2-methyl-2-butene d. 2-methyl-1-butene Answer: b. 2,3-dimethyl-butane Ozonolysis cleaves carbon-carbon double bonds in alkenes to […]
9. Which of the following amino acids is commonly used in catalysis by enzyme? a. Alanine b. Arginine c. Serine d. Methionine Serine is the correct answer (option c). Serine […]
