AP Biology Unit Two

Identify which of the following best describes purines and pyrimidines.

• Purines (C, T, & U) have single ring, Pyrimidines (A & G) have double ring

• Purines (C, T, & U) have double ring, Pyrimidines (A & G) have single ring

• Purines (A & G) have single ring, Pyrimidines (C, T, & U) have double ring

• Purines (A & G) have double ring, Pyrimidines (C, T, & U) have single ring

Which of the following demonstrates base pairing rules to 5' - CAGGT - 3'

• 3' - TGGAC - 5'

• 3' - GTCCA - 5'

• 5' - GTCCA - 3'

• 5' - CAGGT - 3'

Which enzyme is responsible for relaxing supercoiling in front of the replication fork?

• helicase

• DNA polymerase

• topoisomerase

• ligase

Where does translation take place in prokaryotes & eukaryotes?

• Prokaryotes - cytosol; Eukaryotes - cytosol or nucleus

• Prokaryotes - cytosol or rough ER; Eukaryotes - cytosol

• Prokaryotes - cytosol; Eukaryotes - cytosol or rough ER

• Prokaryotes - cytosol or nucleus; Eukaryotes - cytosol

Identify which molecules bind to the promoter region

• Ligase

• Topoisomerase

• DNA polymerase

• RNA polymerase

Which RNA bases would pair with TACGAA in transcription? 

• AUGCUU

• ATGCTT

• GCATCC

• GCAUCC

How can a person's muscle cells have the same exact DNA sequences as their nerve cells even though they look and perform completely different?

• The two different cells become mutated

• The proteins expressed in each cell are different

• They actually have different DNA in the two types of cells.

• The genome of the different cells changes

Tags

NGSS.HS-LS1-1

NGSS.HS-LS1-4

RNA polymerase moves in which direction along the DNA?

• 5' to 3' 

• 3' to 5' along the template strand

• 3' to 5' along nontemplate(coding) strand

• 5' to 3' along the template strand

Which of the following is an example of post-transcriptional control of gene expression?

• the addition of methyl groups to cytosine bases of DNA

• the binding of transcription factors to a promoter

• the removal of introns and splicing together of exons

• gene amplification contributing to cancer

The parts of a gene that do NOT code for amino acids in a protein are called

• introns

• exons

• codons

• anticodons