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CSIR NET 2022 | Life Science: Fundamental Processes | 24 November

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Question 1

Which class of proteins facilitates coiling of interphase chromosomes?



Question 2

In which of the following conversion is ATP synthesized by substrate level phosphorylation?

Question 3

Under a given renaturing condition E. coli DNA reassociates with a Cot ½ of 4.0 and an unknown DNA sample with a Cot ½ of 283. The complexity of this unknown DNA will be

Question 4

A 70-kg adult human could meet his or her entire energy needs for one day by eating 3 moles of glucose (540 g).
Assume that each molecule of glucose generates 30 ATP when it is oxidized to CO2.The concentration of ATP is maintained in cells at about 2 mM, and a 70-kg adult has about 25 liters of intracellular fluid.
Given that the ATP concentration remains constant in cells, calculate how many times per day, on average each ATP molecule in the body is hydrolyzed and re synthesized.

Question 5

Which of the following events would occur at the E. coli lac operon when the glucose concentration of the growth medium is low and the lactose concentration is high?
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