Q4a - RNA is susceptible to hydrolysis b) Which is more...

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
Chem 476 September 21, 2007 Quiz 4 Name:________________________ Please complete all questions. You have 10 minutes for the quiz. 1.) (30) The composition of one strand of double-helical DNA(in mole-fraction units) is [C]=0.24, [T] =0.33. a.) What can you say about the [A] and [G] for the same strand? [A]+[G]=1-(0.24+0.33)=0.43 b.) What can you say about the [A], [G], [C], and [T] for the other strand? [G]=0.24, [A]=0.33, [C]+[T]=0.43 2.) (30) a)Which is more stable at high pH, RNA or DNA ? Explain briefly.
Background image of page 1
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: RNA is susceptible to hydrolysis b) Which is more stable at low pH, RNA or DNA? Explain briefly. DNA is susceptible to depurination. 3.) (40) Do you expect Chargaffs rules to be followed for the following cases. Explain briefly. a.) The mRNA for the PKR gene No. Its single-stranded. b.) Reovirus, which has a dsRNA genome Yes. Its double-stranded. c.) RNA-DNA hybrid during reverse transcription of the HIV genome. Yes. Its double-stranded. d.) ssDNA virus X175 No. Its single-stranded....
View Full Document

Ask a homework question - tutors are online