DNA Replication

What are the four chemical bases in DNA?

• A, C, G, T

• A, C, G, U

• A, C, G, P

• A, C, G, S

What is the complementary base for T?

• A

• C

• G

• T

What is the complementary base for C?

• A

• C

• G

• T

Which end of a DNA strand is the starting point for replication?

• 5' end

• 3' end

• Both ends

• None of the above

What enzyme is responsible for separating the two DNA strands during replication?

• Helicase

• Primase

• DNA polymerase

• Exonuclease

What is the function of primase in DNA replication?

• Separating the two DNA strands

• Adding DNA bases in one direction

• Creating RNA primers

• Filling in the gaps with DNA

Which direction does DNA polymerase add DNA bases?

• From 5' end to 3' end

• From 3' end to 5' end

• Both directions

• Random direction

How is the leading strand of DNA made during replication?

• Continuously

• In small chunks

• In the opposite direction

• Randomly

Why is the lagging strand of DNA made in small chunks?

• Because it runs in the opposite direction

• Because it is made by primase

• Because it is made by helicase

• Because it is made by exonuclease

What are the small chunks of the lagging strand called?

• Okazaki fragments

• RNA primers

• DNA polymerases

• Exonucleases