AP Bio Gene Expression Review

DNA molecule segment is : TTACGCAAG
The mutated DNA segment is TTATCGCAAG. This is an example of ___ mutation.

• Deletion
• Substitution
• Insertion
• Inversion

Tags

NGSS.HS-LS3-2

The "on/off" switch for an operon is called the

• promoter
• repressor
• operator
• gene

How can a person's muscle cells have the same exact DNA sequences as their nerve cells even though the 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

_______ is to transcription as ________ is to translation.

• mRNA / Amino Acid Chain
• Amino Acid Chain / mRNA
• Ribosome / Nucleus
• mRNA / tRNA

What is occurring in this picture?

• Translation
• Replication
• Translocation
• Transcription

In the lac operon, the genes within the operon will be expressed if:

• lactose is absent in the cell
• galactose is present in the cell
• lactose is present in the cell
• glucose is absent in the cell

Tags

NGSS.HS-LS3-1

What type of operon is the lac (lactose) operon?

• inducible
• repressible
• positive control
• promoible

Transcription begins at sequences called

• Start Codons
• Promoters
• Origins
• Introns

When the Ribosome reaches ________________ the process of translation stops

• Stop Codon
• Okazaki Fragment
• Terminator
• taq Polymerase

Which process is happening in this picture?

• Transcription
• Translation
• Replication