If 3 squares are chosen at random on a chess board the probability that they should be in a diagonal line is

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#Question id: 2117

#Section 3: Genetics, Cellular and Molecular Biology

Which of the following statements correctly describes osmosis?

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#Question id: 199

#Section 2: General Biology

The ʺ+ʺ sign in NAD+ indicates that

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#Question id: 15478

#Section 6: Plant, Animal and Microbial Biotechnology

Escherichia coli preferentially utilizes glucose by preventing the uptake of lactose and switching off transcription of the lac operon. This mechanism is known as 

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#Question id: 644

#Section 2: General Biology

Enzyme X and Enzyme Y are both involved in monosaccharide metabolism. Enzyme X uses glucose as a substrate while Enzyme Y uses fructose as a substrate. At pH=7.0, Enzyme X has a Vmax of 10 μM/s while Enzyme Y has a Vmax of 20 μM/s. Both enzymes have a Km of 3.0 mM for their respective substrates. Which aspects of its reaction will be changed by Enzyme Y?

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#Question id: 3264

#Section 3: Genetics, Cellular and Molecular Biology

Which of the following is (are) true of natural selection?