If the culture is kept in stationary phase for a prolonged period, the cells may die. Why?

a) due to the time taken for doubling of cell number

b) duration of a cell generation is too large, depending mainly on the plant species.

c) stationary phase is forced on the culture by a depletion of the nutrients

d) due to an accumulation of cellular wastes

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#Question id: 597

#SCPH05 I Biotechnology

The Km values for enzyme reactions such as A + B → C + D

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#Question id: 3687

#SCPH05 I Biotechnology

As the two strands of the double helix are separated, the positive supercoiling interferes with the further unwinding of DNA. Which of the following enzyme makes a break in a strand of DNA to release the supercoiling and facilitate the replication to occur?

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#Question id: 103

#SCPH05 I Biotechnology

Lipids may be either hydrophobic or ________.

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#Question id: 15559

#SCPH05 I Biotechnology

The majority of the antibiotics have been isolated from 

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#Question id: 311

#SCPH05 I Biotechnology

Which of the following has no contribution to the stability of tRNA?