B2 5.1 Cell division and growth

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Why are new cells needed?
For growth and repair
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What is the nucleus?
The part of the cell that contains genetic information
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What is a chromosome?
A thread-like structure containing genes
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What is a gene?
A small pocket of information controlling a characteristic
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What is a cell?
The basic building block of a living organism
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What is DNA?
The chemical from which chromosomes are made
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What is an allele?
Different forms of the same gene
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How many chromosomes are there in a nucleus?
46
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What is another name for the sex cells?
Gametes
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What is mitosis?
Asexual cell division where two identical cells are formed
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How does mitosis work?
Before a cell divides it produces new copies of the chromomes in the nucleus. Then the cell divides once to form two genetically identical cells
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What is a stem cell?
An unspecialised cell
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How does differentiation differ in plants and animals?
Many types of animal cell differentiate at an early stage of development. Many plant cells differentiate through life
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Card 2

Front

What is the nucleus?

Back

The part of the cell that contains genetic information

Card 3

Front

What is a chromosome?

Back

Preview of the front of card 3

Card 4

Front

What is a gene?

Back

Preview of the front of card 4

Card 5

Front

What is a cell?

Back

Preview of the front of card 5
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