DNA Structure and Replication

Front

What makes up the SIDES of a DNA ladder?

Back

Sugars and phosphates.

Front

Which of the following best describes a DNA molecule?

Back

Double helix.

Front

What makes up the rungs (steps) of a DNA ladder?

Back

Nitrogen bases.

Front

Cytosine always pairs with which base?

Back

Guanine.

Front

If one strand of a DNA molecule has the following order of bases, what will be the correct order of bases on the complementary strand? AATTGGCC

Back

TTAACCGG.

Front

What are the building blocks of DNA?

Back

Nucleotides.

Front

What are the three components of a nucleotide?

Back

A sugar, a phosphate group, and a nitrogenous base.

Front

What is the role of DNA helicase in DNA replication?

Back

It unwinds the DNA double helix.

Front

What is the function of DNA polymerase?

Back

It synthesizes new DNA strands by adding nucleotides.

Front

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

Back

They indicate the directionality of the DNA strand.