Cell Differentiation Exit Ticket

All our cells, except sex cells like eggs or sperm, have ___________ DNA

• different
• similar
• exactly the same
• half the amount of 

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NGSS.MS-LS3-2

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-LS1-4

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 in each cell
• Each cell has its own unique DNA
• The DNA is different, but each cell contains the same genes

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NGSS.MS-LS3-1

Your red blood cells only live on AVERAGE about 120 days and then they die. Where do replacement blood cells come from?

• Red blood cells divide and make new red blood cells before they die
• Blood stem cells in the bone marrow make new red blood cells
• Embryonic stem cells are still in your body and replace all worn out cells, including red blood cells
• You will not replace dead red blood cells, you have 30 days to live, make them count.

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NGSS.HS-LS1-4

When one sperm cell combines with one egg cell.

• Fertilization
• Binary Fission
• Asexual Reproduction 
• Mitosis

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NGSS.HS-LS3-2

NGSS.HS-LS4-2

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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NGSS.HS-LS1-4

What is cell specialization or differentiation?

• The process where unspecialized cells become different in structure and function.
• 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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NGSS.HS-LS1-4

What is one goal of cellular differentiation/specialization?

• To create specialized cells to help organism maintain homeostasis.
• To many cells.
• To make stem cells
• to make single celled organisms

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NGSS.HS-LS1-4

NGSS.HS-LS1-3