B2- Cell Division Flashcards

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1
Q

What are chromosomes found in?

A

They are found in pairs

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2
Q

What is in stage 1 on the cell cycle?

A

Replication of DNA to form two copies of chromosomes.

Increase the number of sub-cellular structures such as mitochondria’s for the cell to divide

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3
Q

What happens in stage 2 of the cell cycle?

A

Mitosis-

Set of chromosomes are pulled to each end of the dividing cell and the nucleus divides

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4
Q

What happens in stage 3 of the cell cycle?

A

Cell division-

The cytoplasm and the cell membrane also divide to form two identical daughter cells

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5
Q

Why is mitotic cell division important?

A

Important for growth, repair, development and multicellular organisms

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6
Q

What do adult stem cells repair?

A

Dead or damaged cells when the cell cannot divide itself

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7
Q

What do differentiated cells divide into?

A

Divide to make more of the same cells

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8
Q

Are plant cells always the same cell?

A

No you can move one cell to a different place and it will re differentiate into a new cell

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9
Q

What can you make from a tiny piece of leaf?

A

Huge numbers of identical plant clones

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10
Q

Why is it hard to clone animal cells?

A

Most animal cells differentiate permanently early in embryos and cannot change back unlike plant cells

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11
Q

What can stem cells do?

A

Embryonic and adult stem cells can create new different animal cells and cloned.

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12
Q

What can stem cells help with?

A

To cure diseases and illneses such as paralysis and diabetes

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13
Q

Why would you use stem cells in plants?

A

They are used to make clones and helps produce rare plants, research plants and also for agriculture.

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14
Q

Why not use stem cells?

A

People do not like the fact that you are taking away a life for research purposes. It could also cause cancer/virus transfer and is very expensive

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