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WorksheetsCell Differentiation Exit Ticket
Total questions: 8
Worksheet time: 7mins
Name
Class
Date
1.
All our cells, except sex cells like eggs or sperm, have ___________ DNA
a)
different
b)
similar
c)
exactly the same
d)
half the amount of
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.
a)
Specilized cells (blood, skin, nervous etc) cannot be produced from a single stem cell
b)
Specilized cells are produced immediately following fertilization
c)
Even though all the cells in an organism come from one single cell, they can specialize into different cell types
d)
Sincce all the cells in an organism come from one single cell, they must all have the same structure and function
3.
In what way is the DNA of a nerve cell different from the DNA of a muscle cell?
a)
The DNA is the same but each cell contains different genes
b)
The DNA is the same but different genes are turned on in each cell
c)
Each cell has its own unique DNA
d)
The DNA is different, but each cell contains the same genes
4.
Your red blood cells only live on AVERAGE about 120 days and then they die. Where do replacement blood cells come from?
a)
Red blood cells divide and make new red blood cells before they die
b)
Blood stem cells in the bone marrow make new red blood cells
c)
Embryonic stem cells are still in your body and replace all worn out cells, including red blood cells
d)
You will not replace dead red blood cells, you have 30 days to live, make them count.
5.
When one sperm cell combines with one egg cell.
a)
Fertilization
b)
Binary Fission
c)
Asexual Reproduction
d)
Mitosis
6.
How do stem cells know what type of cells to differentiate into?
a)
The nucleus has instructions to turn some genes on and some genes off
b)
Signals from chemicals in the organism or from the environment determine which genes will be turned on and off
c)
Genes turn on and off randomly
d)
The cell has unique DNA that determines what the cell will become.
7.
What is cell specialization or differentiation?
a)
The process where unspecialized cells become different in structure and function.
b)
When DNA controls the cell cycle.
c)
The ability of cells to make more cells.
d)
The ability of cells to maintain homeostasis.
8.
What is one goal of cellular differentiation/specialization?
a)
To create specialized cells to help organism maintain homeostasis.
b)
To many cells.
c)
To make stem cells
d)
to make single celled organisms
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