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3. I hold a bottle vertically, looking down at its cap. To open the bottle I rotate the cap clockwise. This means the thread of the screw on which the […]

2. The use of DNA evidence to find crime suspects is not perfectly conclusive because of a. degradation of the sample b. contamination by other individuals’ DNA c. insufficient data […]

1. In 1828, Wohler synthesized urea in the laboratory. This was significant because it demonstrated that: a. biomolecules are carbon compounds b. urea would be an ideal fertilizer c. organic […]

15. Rank the following ideas/discoveries from oldest to most recent. (I) DNA is the molecule responsible for heredity (II) Living things best suited to their environment are more likely to […]

14. Despite humans having a highly evolved immune system, pathogens are able to evade the immune system using various strategies. Which of the following immune evasion strategies cannot be employed […]

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- […]