For Approximately the First Two Weeks of Development, Beginning When

question 130

Multiple Choice

For approximately the first two weeks of development, beginning when a sperm fertilizes an egg, the fertilized egg is called a(n) :

• A) zygote
• B) fetus
• C) chromosome
• D) embryo

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Definitions:

Ectotherms

Organisms that regulate their body temperature through external sources, rather than generating much heat internally.

Thermoregulation

The process of maintaining body temperature within certain limits despite changes in the surrounding temperature.

Internal Metabolism

The complex set of chemical transformations within the cells of living organisms that are crucial for life, including energy production and the synthesis of necessary compounds.

Acclimatization

Adjustment to seasonal changes.