The Electron Beam Strikes the Specimen in an Area Where

question 110

Multiple Choice

The electron beam strikes the specimen in an area where there is a high concentration of heavy metal atoms.What does the spot on the phosphorescent screen of the electron microscope just below this part of the specimen look like?

• A)It is dark.
• B)It is bright.
• C)It is speckled.
• D)It is invisible.
• E)It is purple.

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Definitions:

Hemorrhage

is the escape of blood from a ruptured blood vessel, leading to bleeding internally or externally.

Hypothalamus

An area of the brain situated beneath the thalamus that regulates the autonomic nervous system and the function of the pituitary gland, overseeing body temperature, thirst, hunger, and various other systems that maintain internal balance.

Vitamin D

A fat-soluble vitamin that is essential for maintaining healthy bones and teeth, and supporting the immune system.

Keratinocyte Cells

Specialized skin cells that produce keratin, a key protein in the skin, hair, and nails.