DC BIO Chapter 27 Review

The process joining of an egg and sperm is called

• Fertilization

• Differentiation

• Zygote

• Embryo

A fertilized egg is called

• twins

• Differentiation

• Zygote

• morula

Totipotent means that

• A cell can become any type of cell

• The cell will be a stomach cell

• The cell will be a brain cell

• The cell will be a heart cell

The location of the cells determines what they will become

• True

• False

Repeated cell divisions of the zygote during the earliest embryonic development is known as:___________.

• Fertilization

• Cleavage

• oogenesis

• spermatogensis

Which of the following sequences represents the correct order of events in the formation of a human fetus?

• Zygote → Blastocyst → Embryo → Fertilization

• Fertilization → Zygote → Blastocyst → Embryo

• Blastocyst → Embryo → Differentiation → Zygote

• Fertilization → Growth → Differentiation → Zygote

A process in which cells became specialized in structure and function.

• Genomics
• Enzyme
• Differentiation
• Clone

The embryo layer that forms the skin and nervous tissue is the _____.

• endoderm

• mesoderm

• ectoderm

• deuterostome

The innermost layer of the blastocyst is the

• endoderm

• gastrula

• ectoderm

• mesoderm

The middle layer of the blastocyst is the

• endoderm

• ectoderm

• mesoderm

• deuterostome