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13. A peptide has the following sequence ATHMARAMEN. At pH 3.7, the net charge of the peptide is likely to be a. +1 b. +2 c. -1 d. -2 Correct […]

12. The mitochondrial F-Type ATPase is a remarkable protein machine in which a subunit rotates during H+ transport, and 1 ATP is generated for 120 degrees of revolution. ATP hydrolysis […]

11. Researchers passaged three different strains of E. coli (black squares = WT, red circles and blue triangles = mutants) for several days, gradually increasing concentration of the antibiotic cefotaxime […]

10. Rich fishing grounds (that is those that have high species diversity and population), such as those found in Northern Japan or around Iceland, occur where cold and warm ocean […]

9. You are carrying out an enzyme reaction in the lab and obtain Km and Vmax values. While repeating the experiment, you use only 1/10th of the enzyme. What would […]

8. Which of the following statements is correct regarding the increase in molecular weight of proteins due to each of these post-translational modifications? a. Methylation

7. Which of the following techniques cannot be used to quantify affinity between an enzyme and its peptide substrate? a. X-ray crystallography b. Isothermal calorimetry c. Surface plasmon resonance d. […]

6. In our body skin cells and muscle cells share the same DNA. Which of the following is true a. Although they share the same DNA, both have a different […]

5. Despite the large number of unique mutations described in the LDL-R gene that cause familial hypercholesterolemia, certain mutations are found in high frequency in specific populations, e.g., the 9.5 […]

4. How does an adaptation, such as better running speed, evolve with natural selection? a. Natural selection directionally produces better adaptation over time, gradually leading to better running speed. b. […]