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

TLS Online TPP Program

#Question id: 19493

#Unit 4. Cell Communication and Cell Signaling

Enhanced disease susceptibility is caused in

TLS Online TPP Program

#Question id: 317

#Unit 1. Molecules and their Interaction Relevant to Biology

Hydrogen bonds can occur when hydrogen is covalently bonded to atoms like nitrogen and oxygen. What property of nitrogen and oxygen is important for this?

TLS Online TPP Program

#Question id: 10565

#Unit 6. System Physiology – Plant

The term Yp is the hydrostatic pressure of the solution

TLS Online TPP Program

#Question id: 621

#Unit 1. Molecules and their Interaction Relevant to Biology

Michaelis and Menten assumed that the overall reaction for an enzyme-catalyzed reaction could be written as Using this reaction, the rate of breakdown of the enzyme-substrate complex can be described by the expression:

TLS Online TPP Program

#Question id: 11413

#Unit 10. Ecological Principles

Which of the following is NOT an attribute of a species that makes it vulnerable to extinction?