
Reproductive System Review
Flashcard
•
Biology
•
7th Grade
•
Practice Problem
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What type of twins are formed when one zygote splits into two embryos?
Back
Identical twins are formed from one zygote splitting into two embryos.
2.
FLASHCARD QUESTION
Front
What is the number of chromosomes in sex cells (egg and sperm) compared to normal human body cells?
Back
The number of chromosomes in sex cells is half the number of chromosomes in normal human body cells.
3.
FLASHCARD QUESTION
Front
What is the term for the series of muscle contractions in the uterus that help push the baby through the birth canal?
Back
Labor is the term for the series of muscle contractions that help push the baby through the birth canal.
4.
FLASHCARD QUESTION
Front
What is the exchange organ that allows the embryo and mother to exchange materials?
Back
The placenta is the exchange organ that allows the embryo and mother to exchange materials such as nutrients and waste.
5.
FLASHCARD QUESTION
Front
How long does a 'normal' pregnancy usually last?
Back
A 'normal' pregnancy usually lasts about 40 weeks.
6.
FLASHCARD QUESTION
Front
What is the role of the placenta during pregnancy?
Back
The placenta provides nutrients and oxygen to the growing baby and removes waste products.
7.
FLASHCARD QUESTION
Front
What are fraternal twins?
Back
Fraternal twins are twins that develop from two separate eggs fertilized by two separate sperm cells.
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