DNA

Front

What determines the code, or information, of a DNA molecule?

Back

The order (sequence) of the nitrogen bases.

Front

In what phase of the cell cycle does DNA replication take place?

Back

S phase.

Front

In a molecule of double-stranded DNA, the amount of Adenine present is always equal to the amount of?

Back

Thymine.

Front

What is the five-carbon sugar found in DNA?

Back

Deoxyribose.

Front

How did Rosalind Franklin's photo 51 affect the work of Watson and Crick?

Back

It was used to determine the physical structure of DNA.

Front

What are the four nitrogen bases found in DNA?

Back

Adenine, Thymine, Cytosine, Guanine.

Front

What is the structure of DNA?

Back

A double helix.

Front

What type of bond holds the two strands of DNA together?

Back

Hydrogen bonds between nitrogen bases.

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 important for replication and transcription.