Mitosis and Stem Cells

Structure A refers to the _____.

• chromatid
• chromosome
• centromere

How many chromosomes does each body cell of a human have? 

• 48
• 46
• 23
• 2

Where does DNA replication occur? 

• The cytoplasm
• The nucleus

Before mitosis begins, which happens before the nucleus starts dividing?

• The cytoplasm separates.

• The DNA replicates.

• The sister chromatids separate.

• The homologous chromosomes cross over

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Fruit fly body cells have 8 chromosomes. After mitosis, you would expect a resulting fruit fly daughter cell to have ...

• 16 chromosomes.
• 46 chromosomes.
• 8 chromosomes.
• 4 chromosomes.

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In mitosis, the two resulting cells are

• different from the starting cell and identical to each other.
• different from the starting cell and different from each other.
• identical to the starting cell and different from each other.
• identical to the starting cell and identical to each other.

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Cells of organism must replicate for ?

• growth
• repair of damaged cells
• replacement of dying cells.
• All of the above

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Stem cells can be obtained from

• embryos
• some adult tissues
• umbilical cord blood
• all of the above

Stem cells are ____________________.

• cells that grow uncontrollably
• undifferentiated and can turn into any type of cell
• those that never go through cell division
• differentiated cells that do one job

Which of the following cells is UNdifferentiated or UNspecialised?

• cardiac muscle cell

• nerve cell

• liver cell

• stem cell

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