Question

Which of the following enzymes do NOT aid in unwinding of DNA for replication?

A. Single-stranded binding proteins

B. Helicase

C. Topoisomerase

D.Primase

E.Gyrase

Which of the following would NOT necessarily be true for a DNA molecule?

A. A + G = C + T

B. A + T = G + C

C. A = T

D. C = G

E. A + C = G + T

Answer 1

Primase

( Primase synthesize short RNA primer for starting of DNA replication. Single stranded binding protein is responsible for stable the single strand and inhibit to ligated. Other are useful for unwinding of DNA.)

B. A+T = G+C

( It's not true because adenine plus thymine content with guanine plus Cytosine not necessarily equal for any DNA strand. According to Chargaff's rules A=T and G=C in terms of concentration in a double stranded DNA molecule.)

Thank you.........