DNA and Cell Cycle Review

Front

What is the primary function of helicase in DNA replication?

Back

To unwind the DNA helix.

Front

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

Back

Deoxyribose sugar and phosphate.

Front

What phase of mitosis is characterized by the separation of sister chromatids?

Back

Anaphase.

Front

What is the role of ligase in DNA replication?

Back

Seals the gaps between Okazaki fragments.

Front

What is the result of DNA replication?

Back

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

Front

What are the building blocks of DNA?

Back

Nucleotides.

Front

What are the four nitrogenous bases in DNA?

Back

Adenine, Thymine, Cytosine, Guanine.

Front

What is the function of DNA polymerase?

Back

To add nucleotides to the growing DNA strand during replication.

Front

What is the structure of DNA?

Back

A double helix.

Front

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

Back

They indicate the directionality of the DNA strand.