Unit 4 - DNA Structure and DNA Replication

Front

Who discovered the base pair rules (A=T and G=C)?

Back

Chargaff

Front

What two molecules form the sides (backbone) of the DNA ladder?

Back

Deoxyribose sugar and phosphate

Front

What are the building blocks of DNA that consist of a sugar, phosphate, and nitrogen base?

Back

Nucleotide

Front

In DNA, which base does Adenine bond with?

Back

Thymine

Front

Why is DNA replication referred to as 'semi-conservative'?

Back

Each new DNA molecule consists of one new strand and one original strand.

Front

What is the structure of DNA commonly described as?

Back

A double helix.

Front

What are the four nitrogenous bases found in DNA?

Back

Adenine, Thymine, Cytosine, Guanine.

Front

What is the role of DNA polymerase in DNA replication?

Back

It synthesizes new DNA strands by adding nucleotides complementary to the template strand.

Front

What is the function of the phosphate group in a nucleotide?

Back

It forms the backbone of the DNA strand, linking sugars together.

Front

What is the significance of the hydrogen bonds between nitrogenous bases?

Back

They hold the two strands of DNA together, allowing for the double helix structure.