epigenetics quiz

Which is not a histone modification?

• Phosphorylation

• Nucleation

• Methylation

• Acetylation

Which of the following is not an example of phosphorylation modification?

• Phosphorylation can destabilize a protein

• Phosphorylation can modify the function of a protein by increasing its biological activity

• Phosphorylation controls the movement between subcellular compartments of a cell

• Phosphorylation controls the initiation of preventing protein-protein interactions

Where does methylation typically occur on DNA?

• Methylation occurs on the 3^rd carbon of guanosine on a cytosine-guanosine dinucleotide

• Methylation occurs on the 3^rd carbon of a cytosine on a cytosine-guanosine base pair

• Methylation occurs on the 5^th carbon on a cytosine on a cytosine-guanosine base pair

• Methylation occurs on the 5th carbon on a cytosine on a cytosine-guanosine dinucleotide

How does the addition of an acetyl group in acetylation change the conformation of the DNA?

• Condenses the chromatin to allow for transcription

• Relaxes the chromatin to allow for transcription

• Relaxes the chromatin to prevent transcription

• Condenses the chromatin to prevent transcription

Epigenetic marks are first added to the genome in utero, making the mother's nutrition extremely important to long-term health

• True

• False