DNA Structure & Replication

Front

What forms the sides (backbone) of the DNA ladder?

Back

Deoxyribose sugar and phosphate.

Front

What is the longest phase in the cell cycle?

Back

Interphase.

Front

What are the three components of a nucleotide?

Back

Sugar, phosphate, nitrogen base.

Front

What shape did Franklin determine the DNA molecule to be?

Back

A twisted ladder.

Front

Who determined the structure of DNA?

Back

Watson and Crick, Chargaff, and Rosalind Franklin.

Front

What is the function of DNA?

Back

To store and transmit genetic information.

Front

What are the base pairing rules in DNA?

Back

Adenine pairs with Thymine, and Cytosine pairs with Guanine.

Front

What is the role of helicase in DNA replication?

Back

To unwind the DNA double helix.

Front

What is the significance of the 5' and 3' ends of DNA?

Back

They indicate the directionality of the DNA strand.

Front

What is semi-conservative replication?

Back

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