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8. Galvani discovered in the 1700s that frog’s legs jerked when touched with a piece of copper and a piece of iron, simultaneously. This happens because action potentials are triggered […]

7. Of the graphs shown below, which is most representative of the kinetics of ion transport through a membrane channel? a. Graph (A) b. Graph (B) c. Graph (C) d. […]

6. In an experiment, two fly populations are separately maintained for many generations. Population A contains closely-related individuals. Population B contains a set of unrelated individuals. Over many generations it […]

5. How would you test whether a phenotypic difference between two populations of a plant is due to environmentally induced plasticity or evolutionary adaptation? a. DNA sequencing b. RNA sequencing […]

4. A geneticist crossed two pure-bred (homozygous) tall and short plants. In the F1 generation she observed that all the offspring were of intermediate height. If she crosses one of […]

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 […]