AP Bio Final Review: DNA, Protein Synthesis, Gene Expressio

Front

What enzyme seals the Okazaki fragments together during DNA replication?

Back

Ligase

Front

In the ribosome, where does tRNA (#2) move after lysine binds to the growing polypeptide?

Back

E site

Front

What is a promoter in the context of gene expression?

Back

A binding site for RNA polymerase.

Front

What type of operon is activated in the presence of an inducer?

Back

Inducible operon.

Front

What are the short stretches of DNA formed on the lagging strand called?

Back

Okazaki fragments.

Front

What is the role of DNA polymerase in DNA replication?

Back

It synthesizes new DNA strands by adding nucleotides.

Front

What is the function of helicase during DNA replication?

Back

It unwinds the DNA double helix.

Front

What is the role of tRNA in protein synthesis?

Back

It carries amino acids to the ribosome and matches them to the codons on mRNA.

Front

What is the difference between the A site and P site in the ribosome?

Back

The A site is where new tRNA enters, while the P site holds the tRNA with the growing polypeptide.

Front

What is gene expression?

Back

The process by which information from a gene is used to synthesize a functional gene product, usually a protein.