In the Ras-Raf Signaling Pathway,MEK Phosphorylates the Protein Kinase ERK

question 18

Multiple Choice

In the Ras-Raf signaling pathway,MEK phosphorylates the protein kinase ERK to activate it.What does activated ERK do?

• A)phosphorylate a variety of cytoplasmic proteins
• B)move into the nucleus
• C)phosphorylate and activate several activators in the nucleus
• D)phosphorylate and activate Elk-1 in the nucleus
• E)all of the above

---

Definitions:

Estrogen

A group of steroid hormones that promote the development and maintenance of female characteristics of the body.

Testosterone

Male sex hormone that helps maintain sexual organs and secondary sex characteristics.

Heart Attack

Damage to the myocardium due to blocked circulation in the coronary arteries; myocardial infarction.

Stressful Lives

Conditions or periods characterized by significant stress due to external pressures or internal conflicts, impacting an individual's psychological well-being.