Question

Tor F The sugar in ribonucleotide is an example of pyranose. The pl of a peptide with amino acids SWFQ is about 6.0. The absorbance of UV at 260nm increases during DNA re-annealing. Tor F Tor F

Answer 1

1 The sugar in ribonucleotide is an example of pyranose -false

2 The PI of a peptide with amino acids SWFQ is about 6 -false

because the PI of an amino acid is the PH at which an amino acid has a net charge of zero.amino acids will exist with a net charge of zero.

3. The absorbance of UV at 260nm increases during DNA re-annealing-true because Nucleic acids absorb UV light due to hetrocyclic rings of the nucleotides; the sugar phosphate does not contribute to absorption. the wavelength of the maximum absorption for both DNA and RNA is 260nm.with a characteristics value of each base.