The Developing Human Is Most Susceptible to the Occurrence of Birth

question 57

Multiple Choice

The developing human is most susceptible to the occurrence of birth defects from radiation or chemical insults

• A) at the time of birth.
• B) during the third trimester of gestation.
• C) during the first trimester of gestation.
• D) when it is a zygote.
• E) during the final stages of organ formation.

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Definitions:

Agar

Agar is a gelatinous substance derived from red algae that is used as a growth medium in microbiological work, as well as a thickener in food products.

Red Algae

Marine photosynthetic protists with a notable abundance of phycobilin pigments; includes coralline algae of coral reefs.

Protozoans

Diverse group of unicellular eukaryotic organisms, often considered as "animal-like" protists, that inhabit water or soil.

Heterotrophic

Heterotrophic organisms are those that obtain their food and energy by consuming other organisms or organic matter because they cannot synthesize their own food.