During Prenatal Development,the Placenta

question 491

Multiple Choice

During prenatal development,the placenta

• A) transfers nutrients and oxygen from mother to embryo.
• B) can damage an embryo or fetus as a result of exposure to viruses or drugs.
• C) represents decreased responding to stimuli.
• D) leaves chemical marks on DNA that switch genes abnormally on or off.

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Definitions:

Dim Room

A dim room is a space where the lighting is intentionally kept low, either for ambiance, to reduce energy consumption, or to facilitate certain activities or experiments.

Widens

To become broader or more open in space or time.

Hue

A color or shade in the spectrum, distinguished by its wavelength of light.

Wavelength

The distance between successive crests of a wave, typically used in the context of electromagnetic waves.