DNA Structure and Replication

Front

What are the 4 nitrogen bases in DNA?

Back

Adenine, Thymine, Cytosine, and Guanine.

Front

Which sequence of complementary DNA bases would pair with this partial strand ATG TGA CAG?

Back

TAC ACT GTC.

Front

Who was given credit for determining the shape of DNA?

Back

Watson and Crick.

Front

Guanine bonds with which nitrogen base?

Back

Cytosine.

Front

Why is DNA sometimes called 'semi-conservative'?

Back

The old strand is 'conserved' and used to make the new strands.

Front

What is the structure of DNA?

Back

DNA is a double helix composed of two strands of nucleotides.

Front

What are nucleotides made of?

Back

A phosphate group, a sugar (deoxyribose), and a nitrogen base.

Front

What is the role of DNA polymerase in DNA replication?

Back

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

Front

What is the function of helicase in DNA replication?

Back

Helicase unwinds the double helix and separates the two strands of DNA.

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.