Kaplan Nursing Entrance Exam Practice 2025 – Comprehensive Prep

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What is the term for a fertilized egg?

Ovum

Blastocyst

Zygote

The term for a fertilized egg is "zygote." This stage occurs shortly after the sperm fertilizes the ovum, leading to the formation of a single cell that contains a complete set of DNA from both parents. The zygote begins its journey down the fallopian tube toward the uterus, where it will eventually implant and continue developing.

As the zygote divides and grows, it transforms into a blastocyst, which is an early stage of development that occurs about five to six days after fertilization. An embryo refers to the developing organism after the stage of the zygote and is typically used from the time of implantation onward until the end of the eighth week of pregnancy. Ovum specifically refers to the female gamete before it is fertilized, which is not the case once fertilization has occurred. Understanding these distinct stages is crucial in developmental biology and reproductive health.

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