What is the source of the C-6 atom during de novo biosynthesis of purines?

TLS Online TPP Program

#Question id: 636

#Unit 1. Molecules and their Interaction Relevant to Biology

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: 19748

#Unit 3. Fundamental Processes

Circularisation of telomere known as

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#Question id: 11471

#Unit 7. System Physiology – Animal

Hair cells in the vertebrate ear are responsible for transducing sound pressure waves. Ion channels in the hair cell membrane open when ________.

TLS Online TPP Program

#Question id: 19747

#Unit 3. Fundamental Processes

Which proteins bound at the telomere to distinguish telomeres from other DNA ends in the cell prevents telomeres from normal DSBR

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#Question id: 28635

#Unit 2. Cellular Organization

APC/Ccdh1 is inactivated by cdh1 phosphorylation on multiple site by___