AP Biology DNA History Structure and Replication

What is DNA made up of?

• nucleotides

• cytoplasm

• RNA

• cells

Why is DNA important?

• it is very small and very complicated

• it's in everything

• it serves as the blueprint for traits of all living things

• because we eat it every day for energy

Tags

NGSS.HS-LS1-1

NGSS.HS-LS3-1

Cytosine always pairs with

• Adenine

• Thymine

• Uracil

• Guanine

Guanine bonds with ______________.

• Adenine

• Guanine

• Cytosine

• Thymine

Which enzyme is responsible for adding the free nucleotides to the replicating DNA? ​

• DNA Helicase

• DNA Ligase

• DNA polyermase

• RNA Polymerase

DNA replication results in two DNA molecules,

• each one with two original strands

• each one with two new strands

• each one with one new strand and one original strand

• one with two new strands and the other with two original strands

Which of the following units are repeatedly joined together to form a strand of DNA?

• nucleotides

• amino acids

• fatty acids

• polysaccharides

The enzyme that unwinds the DNA to prepare for replication

• helicase

• replicase

• polymerase

• synthase

Which enzyme is responsible for adding nucleotides?

• Topoisomerase

• DNA Polymerase

• Ligase

• Primase

Why does DNA replicate?

• To create another copy for the new cell

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

• To create a new copy to replace the damaged original