1. Vocabulary Mitosis Process in which a cell makes a copy of itself
1 cell => 2 cells

2. Why do we need to make new cells?
We are going to be looking at a series of pictures and videos that help us answer this question
For each one
Describe what you see.
How does it answer the question above.

3. Why do we need to make new cells?

4. Why do we need to make new cells?
To replace cells lost due to injuries

5. Why do we need to make new cells?
Watch this video:

6. Why do we need to make new cells?
Watch this video:
To grow taller and bigger

7. Why do we need to make new cells?
Watch this video:

8. Why do we need to make new cells?
Watch this video:
To replace dead cells

9. Why do we need to make new cells?
Replace dead cells
Replace cells lost from injury
Growth

10. Practice Question
Which of the following BEST describes how bone tissue is repaired following a broken bone?
bone cells divide and replace damaged cells
bone cells stored in the blood are sent to the tissue
bone cells increase in size and fill in damaged area
dead bone cells are repaired and replaced in the tissue
The observations of the changes in a cell during a scientific investigation are shown in the diagram above. This process enables the organism to
grow and get rid of wastes.
make repairs and extract energy from food.
grow and make repairs.
grow and extract energy from food.

11. Practice Question
Which of the following BEST describes how bone tissue is repaired following a broken bone?
bone cells divide and replace damaged cells
bone cells stored in the blood are sent to the tissue
bone cells increase in size and fill in damaged area
dead bone cells are repaired and replaced in the tissue
The observations of the changes in a cell during a scientific investigation are shown in the diagram above. This process enables the organism to
grow and get rid of wastes.
make repairs and extract energy from food.
grow and make repairs.
grow and extract energy from food.