Cell growth and differentiation

Cancer is...

• Uncontrolled cell growth

• Normal cell growth

• A protein

• A cell cycle regulator

What is Apoptosis?

• A tumor

• A protein

• Programmed cell death

• Cell cycle checkpoints

Mitosis is also referred to as...

• cellular multiplication

• cellular subtraction

• cellular addition

• cellular division

Mitosis starts with one cell and ends with...

• one cell

• two cells

• three cells

• four cells

What best explains the role of cellular division?

• to grow, develop, and repair tissue

• to eliminate unneeded cells

• to produce egg and sperm cells

• to eliminate waste from your body

What is cell differentiation?

• Process by which cells produce more cells
• Process by which cells become specialized
• Process by which cells become unspecialized
• Process by which cells die

Stem cells are

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

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 

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

What causes differentiation?

• The DNA is different in each type of cell. 
• Some cells have more or less DNA than others.
• Only specific parts of the DNA are activated.
• The DNA has genes that are expressed the same way.