DNA Replication

What part of the nucleotide is used to figure out the 5' prime to 3' prime?

• the phosphate group

• the pentose sugar

• the nitrogenous base

• the oxygen molecules

What type of bonds does helicase break?

• covalent bonds

• magnetic bonds

• hydrogen bonds

• ionic bonds

What is the area called where the bonds have been broken by helicase and the two strands are seperated from one another?

• antiparallel

• enzyme action

• open DNA

• replication fork

Which DNA strand adds new bases in sections called Okazaki fragments?

(a)  

What enzyme builds the new DNA stand?

• Helicase

• Lactase

• DNA Polymerase

• Rubisco

What does ligase do?

• it builds the new strand of DNA

• it unzips the two DNA strands

• it breaks the hydrogen bonds

• it attaches Okazaki fragment together

In what direction is the leading strand read?

• 3' to 5'

• 5' to 3'

• top to bottom

• left to right

in what direction is the lagging strand built?

• 3' to 5'

• 5' to 3'

• top to bottom

• left to right

All DNA is built in what direction?

• top to bottom

• 3' to 5'

• 5' to 3'

• right to left

Why is DNA built in two different directions?

• because it is antiparallel

• because it is a complex molecule

• because ligase only goes in 1 direction

• because it is made of nucleotides