What Is the Depth of Field

question 39

Multiple Choice

What is the depth of field?

• A)The thickness of the specimen that is in sharp focus
• B)How easily focused the specimen is between two different magnifications
• C)The length of the specimen when viewed with the scanning objective lens
• D)How wide the view is through the lens

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Definitions:

Zymogens

Inactive enzyme precursors that require a biochemical change to become active enzymes.

Estrogens

A group of steroid hormones that play a key role in the development and regulation of the female reproductive system and secondary sexual characteristics.

Androgens

A group of hormones that play a role in male traits and reproductive activity; testosterone is the most well-known androgen.

Male Embryo

An embryo that has XY chromosomes, leading to the development of male sexual characteristics.