Author: admin

13. Rifampicin, an inhibitor of RNA polymerase, is added to a bacterial culture. The culture is immediately divided into three fractions, to which radioactive thymine or uracil or methionine are […]

12. Which of the following mRNA molecules would form the most stable stem-loop structure? a. 5’…GGCUU……UUCGG…3′ b. 5’…GGCUU……AAGCC…3′ c. 5’…GGCUU……GGCUU…3′ d. 5’…GGCUU……CCGAA…3′ Most Stable mRNA Stem-Loop: CSIR NET Question Solved […]

11. When HeLa cells were treated with the growth factor TGF-β for 30 minutes, levels of E-Cadherin protein were reduced. mRNA levels of the E-Cadherin gene (CDH1) did not show […]

10. N-linked glycosylation in proteins of eukaryotes is initiated in the: a. lumen of the endoplasmic reticulum b. lumen of the Golgi apparatus c. inside the nucleus d. within endosomes […]

9. Mitochondria isolated and placed in a buffered solution with a low pH start to produce ATP. This is likely due to: a. lower pH inside mitochondria b. increased OH- […]

8. The Asian mongoose and the American skunk evolved independently of each other, but show similar structures and features, for e.g., ability to spray their attacker with musk. The similarities […]

7. You transcribe mRNA from a DNA sample and purify it. You then separate the two strands of the DNA and analyse the base composition of each strand and of […]

6. Microorganisms that produce antibiotics are unaffected by the same antibiotic. One mechanism to explain this is: a. Microorganisms export the antibiotic using efflux pumps as soon as it exceeds […]

5. In the evolutionary history of life, identify the most likely order in which the following entities arose: a. plasma membrane < RNA < chloroplasts < nucleus b. nucleus < […]

4. Which of these events contributes the most in proper folding of a polypeptide to its native state in an aqueous solvent? a. loss of hydrogen bonding between the polar […]