Cell Differentiation

How do specialized cells develop?

• cell has active parts of DNA

• cell has IDENTICAL DNA with expression of specific genes

• multiple copies of DNA

• one chromosome

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Cell differentiation results in specialized cells with a specific function which is regulated by -

• DNA

• ATP

• Glucose

• Sugar

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Stem cells are

• cells that grow uncontrollably
• undifferentiated and can be any type of cell
• never go through cell division
• only found in embryos

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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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What is cell differentiation?

• The process where unspecialized cells become specialized

• When DNA controls the cell cycle.

• The ability of cells to make more cells.

• The ability of cells to maintain homeostasis.

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Cells that have the ability to become any type of specialized cell in the body are called:

• cell membranes

• stem cells

• nerve cells

• cardiac cells

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What is one goal of cellular differentiation/specialization?

• To create specialized cells

• To many cells.

• To make stem cells

• to make single celled organisms

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Which statement is true about cell differentiation and environmental factors?

• environmental factors do not activate or deactivate genes in the DNA if cells

• external factors can trigger the activation of specific genes in the DNA of cells

• internal factors are the only factors that activate specific genes

• none of the statements are true

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Why are genes important in terms of cell specialization?

• genes are not found on your DNa

• genes can be activated and inactivated

• molecules are transported out of the nucleus

• homeostasis

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