Gene Regulation and Epigenetics

All the genes in both a prokaryotic cell and a eukaryotic cell are expressed at the same time.

• True

• False

In order for a gene to be expressed, ___ must bind to the gene's ___, a specific sequence of nucleotides at one end of the gene, thus initiating transcription.

• DNA polymerase, promotor

• DNA polymerase, operator

• RNA polymerase, promotor

• RNA polymerase, operator

In eukaryotes, proteins that help the RNA polymerase bind to the regulatory region for transcription are called ____________.

• transcription factors
• topoisomerase
• regulatory genes
• activators

Tags

NGSS.HS-LS1-1

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

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-LS1-4

What structure of this molecule binds with the mRNA molecule?

• Amino Acid
• tRNA
• Anticodon
• Codon

In eukaryotes, DNA is tightly coiled around ____ in chromatin

• Histones

• Whey

• Casein

• Hemoglobin

Where does transcription occur in eukaryotic cells?

• Nucleus
• Ribosome
• Cytoplasm
• Rough E.R.

Gene regulation is the process that is used to:

• help make sugars for cells in plants.

• make glycosomes in cells.

• turn genes on and off.

• Not sure, need help.

What are the transcription factors?

• Molecules that provide ATP to transcription unit

• Molecules that synthesize RNA during transcription 

• Molecules that bring amino acids to the transcription unit

• Molecules that bind to enhance/inhibit transcription.