DNA polymerase contains a lysine residue that is important for binding to DNA. Mutations were found that converted this lysine to either glutamate, glycine, valine, or arginine. Which mutations would be predicted to be the most and least harmful to the ability of the enzyme to bind DNA?

	Most	Least
(A)	Valine	Aspartate
(B)	Glycine	Arginine
(C)	Arginine	Glycine
(D)	Glutamate	Arginine

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#Question id: 3781

#Section 3: Genetics, Cellular and Molecular Biology

Hershey and Chase used a DNA-based virus for their work. How might the results have been different if they had used an RNA virus?

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#Question id: 27196

#Section 5: Bioprocess Engineering and Process Biotechnology

The rate constant for a first order reaction is 7.0 x 10^-4 s^-1. If initial concentration of reactant is 0.080 M, what is the half life of reaction?

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#Question id: 3586

#Section 3: Genetics, Cellular and Molecular Biology

In watermelons, bitter fruit (B) is dominant over sweet fruit (b), and yellow spots (S) are dominant over no spots (s). The genes for these two characteristics assort independently. A homozygous plant that has bitter fruit and yellow spots is crossed with a homozygous plant that has sweet fruit and no spots. If an F1 plant is backcrossed with the bitter, yellow spotted parent, what phenotypes and proportions are expected in the offspring?

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#Question id: 14113

#Section 7: Recombinant DNA technology and Other Tools in Biotechnology

SWISS-PROT is related to 

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#Question id: 14445

#Section 1: Engineering Mathematics

For what value of x, matrix is a singular matrix?