All cells in an organism have the same DNA.  However, only certain genes are activated in different types of cells.  This is ..

• osmosis
• differentiation
• photosynthesis
• respiration

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NGSS.HS-LS1-4

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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NGSS.HS-LS1-4

Stem cells can be obtained from

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

The diagram shows the process of cell specialization from a single stem cell. Which of the following statements is true about the process of specialization.

• Specilized cells (blood, skin, nervous etc) cannot be produced from a single stem cell
• Specilized cells are produced immediately following fertilization
• Even though all the cells in an organism come from one single cell, they can specialize into different cell types
• Sincce all the cells in an organism come from one single cell, they must all have the same structure and function

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NGSS.HS-LS1-2

NGSS.HS-LS1-4

This type of cell sends messages throughout the body in the form of electrical impulse.

• nerve cell
• sperm cell
• muscle cell
• skin cell

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NGSS.MS-LS1-2

This type of cell is found in males and is responsible for reproduction.

• sperm cell
• egg cell
• muscle cell
• nerve cell

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NGSS.HS-LS3-2

This type of cell carries oxygen throughout the body.

• gamete
• platelet
• white blood cell
• red blood cell

In what way is the DNA of a nerve cell different from the DNA of a muscle cell?

• The DNA is the same but each cell contains different genes
• The DNA is the same but different genes are turned on and turned off in each cell
• The DNA is different, but the same genes are turned on and off in each cell
• The DNA is different, but each cell contains the same genes

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NGSS.HS-LS1-1

NGSS.HS-LS1-4

These types of cells are banded closely together to shorten or contract.

• nerve cells
• red blood cells
• muscle cells
• sperm cells

Which of the following is NOT a specialized cell?

• Stem Cell

• Brain Cell

• Nerve Cell

• Intestinal Cell

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NGSS.MS-LS1-3