A Proton, Moving North, Enters a Magnetic Field of a Certain

question 65

Multiple Choice

A proton, moving north, enters a magnetic field of a certain strength. Because of this field the proton curves downward. What is the direction of the magnetic field?

• A) downward
• B) upward
• C) towards the east
• D) towards the west
• E) towards the north

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Definitions:

Neurofibrillary Tangles

Twisted fibers that build up inside nerve cells, associated with various neurodegenerative diseases, including Alzheimer's disease.

Amyloid Plaques

Accumulations of misfolded proteins in the brain, associated with neurodegenerative diseases such as Alzheimer's disease.

Lewy Bodies

Abnormal aggregates of protein that develop inside nerve cells, associated with Parkinson's disease and dementia.

Vitamin D

A group of fat-soluble secosteroids responsible for increasing intestinal absorption of calcium, magnesium, and phosphate, and multiple other biological effects.