Gene Regulation and Expression

What is the name given to part of a DNA molecule that codes for a protein?

• Glucose

• Chromosome

• Gene

• Phosphate

Tags

NGSS.HS-LS1-1

what does a promoter do?

• it allows a gene to be transcribed

• it creates a DNA segment

• it is another word for ribosomes

• it is another word for RNA

Muscle cells differ from nerve cells mainly because they

• express different genes.

• contain different genes.

• use different genetic codes.

• have unique ribosomes

Tags

NGSS.HS-LS1-4

NGSS.HS-LS3-1

The lac operon genes only become expressed if:

• lactose binds to the repressor

• glucose binds to the repressor

• lactose binds to the operator

• the repressor binds to the operator

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

• lactose is absent in the cell

• glucose is present in the cell

• lactose is present in the cell

What structure of this molecule binds with the mRNA molecule?

• Amino Acid

• tRNA

• Anticodon

• Codon

What process is steps 1-3 referring to?

• DNA Replication

• Transcription

• Translation

• Nucleus

Tags

NGSS.HS-LS1-1

Genes can be shut off (not expressed) when a ___ binds to the ____.

• activator, operator

• repressor, operator

• corepressor, operator

• repressor, promotor

If an mRNA molecule has introns and exons in it, where is it?

• At a ribosome

• In the nucleus

• In a prokaryotic cell

• could be in the nucleus or the ribosome

RNA has what base that is instead of thymine?

• guanine

• adenine

• thymine

• uracil