DNA replication

Why does DNA need to be replicated?

• To create a duplicate copy in case the original is damaged

• To create a perfect copy for a new cell

• To replace a piece of damaged DNA in the existing cell

• To have double the amount of DNA in a cell

Enzyme that connects two Okazaki fragments together.

• Primase

• Polymerase

• Helicase

• Ligase

If the original cell is called a parent strand, what do you call the cell resulting from replication?

• Daughter cell

• Brother cell

• Sister cell

• Grandfather cell

Which model of DNA replication is accepted by the Biological community?

• Conservative model

• Semi-Conservative model

• Dispersive model

• Deterioration model

In which direction is DNA replicated?

• North - South

• 5' - 3'

• East - West

• 3' - 5'

Enzyme responsible for unwinding DNA.

• Helicase

• Polymerase

• Gyrase

• Primase

The bonds that hold nucleotides together are weak bonds, what are they called?

• Oxygen bonds

• Phosphate bonds

• Covalent Phosphodiester bonds

• Hydrogen bonds

The replicating strand that results in small unconnected fragments is known as what?

• Leading strand

• Lagging strand

• Limping strand

• Lending strand

How many base pairs code for an amino acid?

• 1

• 2

• 3

• 4

The bonds that hold sugars and phosphates together are strong bonds, what are they called?

• Oxygen bonds

• Phosphate bonds

• Covalent Phosphodiester bonds

• Hydrogen bonds