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Chapter 2 lesson 2
Science
21
Science
6th Grade
11/09/2010

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Term
Fertilization is the joining of what two cells during sexual reproduction?
Definition
Sperm cell, Egg cell
Term
A sperm cell and an egg cell only have half of the ____________ needed to make a human cell.
Definition
Chromosomed
Term
The first cell of a new organism is called what?
Definition
zygote
Term
The zygote goes through _______ and ____________ to form new cells.
Definition
mitosis, cell division
Term
The cells use what to keep growing?
Definition
mitosis and cell division
Term
Some female organisms keep their ______ in side their bodies to be fertilized and then they lay their eggs in a ______.
Definition
eggs, nest
Term
In some organisms like humans the eggs are __________ inside the mother.  
Definition
Fertilized
Term
In humans the ________ grows inside the mother until it is ready to be born.
Definition
zygote
Term
Humans have ____ birth without a shell.
Definition
live
Term
 The female lays ______ which are then fertilized by _________ from the male.
Definition
eggs, sperm
Term
What do frogs do when they lay eggs?
Definition
Femail frogs fertilize their eggs inside their body and then laid in a nest untill their ready to hatch.
Term
What is mitosis?
Definition
The proces by which a cell developes 2 new nuclei.
Term
What the process by which a cell divide after mitosis?
Definition
Cell Division
Term
What is reproduction by two parents?
Definition
sexual reproduction
Term
What is asexual reproduction?
Definition
Reproduction by one parent
Term
Amoeba and volvox are all examples of _________ reproduction.
Definition
asexual
Term
Horses and dogs are examples of _________ reproduction.
Definition
sexual
Term
Meiosis is the process by which __________ form.
Definition
sex cells
Term
What is the cell produced only by an organism that reproduces sexually?
Definition
sex cell
Term
What is fertilization?
Definition
The joining of an egg cell and a sperm cell during sexual reproduction.
Term
Amoeba and volvox are all examples of _________ reproduction.
Definition
asexual
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