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22 Jan 2019

Which statemnt about DNA is incorect?

a.) DNA is the cell is found as double helix

b.) DNA is found in the nucleus of eukarytoic cell

c.) DNA is a single-stranded molecule

d.) DNA strands are held together by hydrogen bonds

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Jean Keeling
Jean KeelingLv2
24 Jan 2019

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Related questions

The genetic information stored in a double stranded DNA molecule is found on both strand. However, it could easily be encoded on a single strand. Considering the cost to the cell of synthesizing and maintaining double the amount of DNA that is actually required, why is DNA double stranded?

Which is wrong about nucleic acids?

(a) DNA is single stranded in some viruses

(b) RNA is double stranded occasionally

(c) length of one helix is 45 A in B-DNA

(d) one turn of Z-DNA has 12 bases.

Order the following steps of the DNA replication process fromfirst to last. (From 1 to 8)

DNA ligase joins Okazaki fragmments together

Elongation of leading strands occurs continuosly and elongationof lagging strands occurs via generation of Okazaki fragments. Bothare synthesized in 5' to 3' direction.

DNA polymerase I removes the RNA primers and replaces them withDNA nucleotides

DNA polymerase III starts adding DNA nucleotides to the 3' endof the existing RNA chain.

Helicase untwists the double helix at the replication fork

Single-stranded binding proteins bind the unpaired DNA strands,keeping them from re-pairing.

Topoisomerase helps releive the strain caused by DNA untwisting.It breaks, swivels and rejoins DNA strands.

Primase starts a complementary RNA chain using parental DNAstrand as a template

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