Which Option Describes a U

question 11

Multiple Choice

Which option describes a U.S.Food and Drug Administration (FDA) safety category C drug?

• A)Risk to the fetus cannot be ruled out;either studies in animals have revealed adverse effects on the fetus (teratogenic or embryocidal effects or other)and there are no controlled studies or studies in women and animals are not available.
• B)There is no evidence of risk to the human fetus.
• C)Controlled studies show no risk to the fetus.
• D)There is positive evidence of risk to the fetus,but the benefits from use in pregnant women may be acceptable in certain clinical settings despite the risk.

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Definitions:

Endodermis

The innermost layer of the plant root cortex. Endodermal cells have a waterproof Casparian strip around their radial and transverse walls that ensures that water and minerals enter the xylem only by passing through the endoderm cells.

Cortical Parenchyma

Plant tissue found in the cortex of stems and roots that is involved in storage, photosynthesis, and transport of nutrients.

Photosynthesis

A process by which green plants and certain other organisms transform light energy, usually from the sun, into chemical energy stored in glucose.

Cutin

A waxy, water-repellent substance present in the cuticle of plants, which helps reduce water loss.