Stem cells Flashcards

1
Q

What do the gametes fertilise to form?

A

A zygote

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2
Q

What is a zygote?

A

A single cell which was fused by the fusion of gametes in sexual reproduction

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3
Q

Explain what happens to the zygote in mitosis?

A

becomes an embryo, then becomes a hollow ball of cell an embryo, the inner cells of this wall are the embryonic stem cells that differentiate to form cells of our body.

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4
Q

What are a good source of adult stem cells?

A

Bone marrow and skin cells

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5
Q

What happens to people due to stem cells not working?

A

People suffer and die because their parts of their body is not working properly

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6
Q

Give an example of stem cells not working. (nerve cells)

A

Spinal injuries, because the nerves cannot repair themselves

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7
Q

Give an example of stem cells not working. (diabetes)

A

Type 1 diabetes, they have to inject themselves with insulin because of thier specialised cells stopped working in the pancreas

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8
Q

A breakthrough of what with embryonic stem cells?

A

They have cultured it and can make organs from them as they can differentiate them, can help people with a transplant.

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9
Q

Why are stem cells important for plants?

A

To produce large numbers of the same plants, cheaper and quicker, it can save plants from extinction and you can make disease resistance plants

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