Cell Differentiation/ Expression review

The single cell in has 40 chromosomes. How many chromosomes would each new cell have ?

• 80

• 20

• 46

• 40

Answer explanation

The goal of mitosis is to make 2 identical new cells. The # of chromosomes should be the same in the beginning and in the end.

The process where a cell divides to make 2 identical cells

• Mitosis

• Cell Differentiation

• Gene expression

• DNA

During the process of cell differentiation

• all sections of DNA are activated to determine the structure of a body cell

• only specific sections of DNA sequence are activated to determine the structure and functions of a body cell

• ONLY ONE section of DNA are deactivated to determine the structure of a body cell

Which cell is an example of a specialized cell ?

• Cell A

• Cell B

The process where needed genes are activated or deactivated to make different cells

• Mitosis

• Cell Differentiation

• Gene Expression

How many cells are made at the end of mitosis?

• 1

• 2

• 3

• 4+

After the cell in part 1 divides, what is the name of the process used to transform a stem cell into a specialized cell like a neuron?

• Mitosis

• Cell differentiation

• Gene expression

Stem cells are

• cells that grow uncontrollably

• undifferentiated cells (no job/ function) that can be any type of cell

• specialized cells (have function/job)

• never go through cell division

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. 

• Muscles cells experience different environmental influences than blood cells. 

• Different genes are activated in muscle cells than in blood cells. 

• A mutation occurs during the development of muscle cells but not in blood cells. 

What is cell differentiation?

• Process by which cells produce more cells

• Process by which cells become unspecialized

• Process by which cells become specialized

• Process by which cells die