HS - DNA replication

The enzyme that unzipps and unwinds DNA

• helicase

• DNA polymerase

• DNA primase

• ligase

DNA strands separated by enzymes and held by binding proteins is called

Short fragment of RNA added to DNA at the beginning of replication is called

New DNA is synthesized by

• DNA polymerase

• DNA synthase

• ligase

• helicase

The DNA strand that is synthesized in fragments is called

• lagging

• leading

• complementary

• antisense

Primers are cut from synthesized DNA by:

• ligase

• DNA polymerase I

• DNA polymerase III

• DNA primase

DNA replication takes place during

• G1 phase

• G2 phase

• S phase

• mitosis

Effect of DNA replication in mitosis is seen in:

• existance of homologous chromosomes

• chromosomes with sister chromatids

• duplicated number of chromosomes before division

• doubled amount of DNA in cell before division

DNA polymerase synthesizes new DNA in what direction?

• 5' to 3'

• 3' to 5'

• 5' to 5'

• 3' to 3'

Small fragments of DNA synthesized on lagging strand are called:

• Okazaki fragments

• primers

• nucleotides

• amino acids