DNA, RNA, and Replication- AP Biology

Front

What is the structure of a DNA molecule?

Back

A DNA molecule is structured as a double helix.

Front

What type of bond joins nitrogenous bases in DNA?

Back

Nitrogenous bases are joined by hydrogen bonds.

Front

What are the components of the sides of the DNA 'ladder'?

Back

The sides of the DNA 'ladder' are made up of alternating phosphates and sugars.

Front

What enzyme is responsible for the elongation of the leading strand during DNA synthesis?

Back

The elongation of the leading strand during DNA synthesis depends on the action of DNA polymerase.

Front

When does DNA replication occur in the cell cycle?

Back

DNA replication occurs during the S phase of the cell cycle.

Front

What are the four nitrogenous bases found in DNA?

Back

The four nitrogenous bases in DNA are adenine (A), thymine (T), cytosine (C), and guanine (G).

Front

What is the role of RNA in protein synthesis?

Back

RNA serves as a template for protein synthesis, carrying the genetic information from DNA to the ribosome.

Front

What is the difference between DNA and RNA?

Back

DNA contains deoxyribose sugar and thymine, while RNA contains ribose sugar and uracil.

Front

What is the function of helicase in DNA replication?

Back

Helicase unwinds the DNA double helix, separating the two strands.

Front

What are Okazaki fragments?

Back

Okazaki fragments are short sequences of DNA synthesized on the lagging strand during DNA replication.