Cell Differentiation and Stem Cells

All cells in your body contain different sets of DNA (except sperm and egg)

• True

• False

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

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

Small section of DNA that code for specific proteins.

• Genes

• DNA

• chromosomes

• chromatin

Specialized Cells have...

• All of their genes switched ON

• All of their genes switched OFF

• Some of their genes switched ON or OFF

• I don't know they like can choose?!?!

A heart cell will have different genes active than a liver cell.

• True

• False

What is cell 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.

Stem cells are

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

Stem cells can be obtained from

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

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

what is the role of stem cells in the body 

• fight against infection 
• provide specialized roles in the body 
• used for fertility treatment 
• they produce new specialized cells in the body to replace old cells that are used up