What Combination of Factors Was Responsible for the Disaster West

question 75

Multiple Choice

What combination of factors was responsible for the disaster west of Yellowstone National Park on August 17, 1959?

• A)Rock falls filled a lake with debris until the water overtopped the dam and eroded through the concrete.
• B)Water migrating along foliation layers in the metamorphic rock destabilized a dam, which collapsed and flooded the valley.
• C)A severe earthquake triggered a slide that blocked a river and flooded a campground.
• D)Drainage from the reservoir generated a lahar, which destroyed small towns downstream.

---

Definitions:

Protein Kinase

An enzyme that modifies other proteins by chemically adding phosphate groups to them, thereby altering their function.

G Protein

A group of proteins functioning as cellular molecular switches, responsible for conveying signals from external stimuli to the inside of the cell.

Cyclic AMP

A second messenger important in many biological processes, derived from adenosine triphosphate (ATP) and used for intracellular signal transduction.

Phosphorylation

The addition of a phosphate group to a molecule, a crucial process in biology that modulates the function of proteins and other molecules in cells.