Fertilization and Embryonic Development

Sexual reproduction is vital to the propagation of the human race. 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

Which of the following is true of a zygote?

• It forms into a blastocyst
• It is an unfertilized egg
• It produces haploid male gametophytes
• It is made up of only one cell

A scientist wants to change the DNA of a sexually reproducing organism and have the new DNA present in every cell of the organism. In order to do this after fertilization, she would change the DNA in which of the following?

• zygote
• placenta
• testes of the father
• ovaries of the mother

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Human reproduction usually involves

• internal fertilization and internal development
• external fertilization and external development
• internal fertilization and external development
• external fertilization and internal development

What is the correct order for early embryonic development in animals?

• Zygote -> Eight-cell stage -> Morula -> Blastula -> Gastrula
• Gastrula -> Blastula -> Morula -> Eight-cell stage -> Zygote
• Zygote -> Eight-cell stage -> Blastula -> Morula -> Gastrual
• Zygote -> Eight-cell stage -> Blastula -> Gastrula-> Morula

Tags

NGSS.HS-LS1-4

What process does the zygote undergoe to become a blastula?

• Cleavage
• Gastrulation
• Metamorphosis
• Cephalization

Tags

NGSS.HS-LS1-4

Where does meiosis occur?

• Testes and ovaries 
• Only the ovaries

Tags

NGSS.HS-LS3-2

External fertilization is common for organisms that live in:

• Trees
• Water
• Land
• Ummm, I'm pretty sure you didn't teach us this...

The joining of a sperm cell and an egg cell is called...

• Fertilization
• Labor
• Zygote
• STOP ASKING ME THESE IMPOSSIBLE QUETSIONS!!

Programmed cell death is called

• apoptosis
• cytokinesis
• interphase
• cancer