Unit 4 - DNA Structure and DNA Replication

Front

What base does Guanine bond with in DNA?

Back

Cytosine

Front

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

Back

Deoxyribose sugar and phosphate

Front

What was Rosalind Franklin's 'photo 51'?

Back

An x-ray image that helped determine the shape of DNA.

Front

In which phase of the cell cycle does DNA replication occur?

Back

S phase

Front

What determines the individuality of an organism?

Back

The order (sequence) of the nitrogen bases in DNA.

Front

What are the four nitrogen bases found in DNA?

Back

Adenine, Thymine, Cytosine, Guanine.

Front

What is the structure of DNA commonly described as?

Back

A double helix.

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 significance of the 5' and 3' ends of a DNA strand?

Back

They indicate the directionality of the DNA strand, which is crucial for replication and transcription.

Front

What is the function of the phosphate group in DNA?

Back

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