Cell Differentiation/Mitosis

Stem cells are

• cells that grow uncontrollably
• an undifferentiated cell that can become specialized.

• never go through cell division
• only found in embryos

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What process best explains how muscle cells and nerve cells can develop from the same fertilized egg?

• genetic engineering
• survival of the fittest
• differentiation
• selective breeding

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Which best explains why muscle cells are different from blood cells?

• Muscle cells are produced by the brain, but blood cells are produced by the heart. 
• Different genes are activated in muscle cells than in blood cells. 
• Muscles cells experience different environmental influences than blood cells. 
• A mutation occurs during the development of muscle cells but not in blood cells. 

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How do stem cells know what type of cells to differentiate into?

• The nucleus has instructions to turn some genes on and some genes off.
• Signals from chemicals in the organism or from the environment determine which genes will be turned on and off.
• Genes turn on and off randomly.
• The cell has unique DNA that determines what the cell will become.

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Which type of cell is unspecialized?

• skin cell
• stem cell
• liver cell
• muscle cell

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How many daughter cells are produced in mitosis?

• 1
• 2
• 4
• 6

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What process does a multi-cellular organism use to replace its damaged body cells?

• mitosis
• meiosis
• replication
• transcription

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When you start with 1 cell, at the end of mitosis, how many identical cells will you have?

• 1
• 2
• 3
• 4

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If you start off with a single body cell, after mitosis you end up with _________________.

• 3 daughter cells

• 2 daughter cells

• 2 meta-phased cells

• 2 deactivated genes

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The name of the process shown in the diagram is called ______________.

• Meiosis

• Cancer

• DNA Replicatoin

• Mitosis

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