1. Cells to Systems
Lesson 1

2. What things need to happen in a cell for it to live?
Cells to Systems
What things need to happen in a cell for it to live?

3. Cells to Systems Purpose
We are going to read about cells, the smallest living parts of a plant or animal.
The purpose for reading, is to discover what a cell is made of, what a cell needs, and what a cell does.

4. Cells to Systems Quick Summary
A cell is the basic building block of living things.
Cells need a way to take in food, turn the food into energy, and get rid of waste products.
Cells combine oxygen and food to get energy, a process called cellular respiration.

5. Cells to Systems What are two functions of every cell?
During cellular respiration in humans, what gas is used by the cell and what gas is produced by the cell?
What would happen to a cell that receives no more oxygen or food?
What is the most basic unit of living things?  
Suppose you saw a small organism move across your desk. Would you infer that this organism was multicellular or a single cell?

6. Bill Nye Cells

7. Cells to Systems Quick Summary
Some common cell parts of plant and animal cells include the nucleus, mitochondria, cell membrane, vacuole, and cytoplasm.
Plant cells contain chloroplasts and a cell wall, cell parts not found in animal cells.
A cell's nucleus is its control center; its mitochondria are energy producers; the cytoplasm holds smaller parts in the cell; the vacuole provides storage; and the cell membrane holds the contents of the cell together and controls what passes into and out of the cell.

8. Cells to Systems
Plant Cells
Animal Cells

9. Cells to Systems Questions What do cell walls provide?
How are plants, animals, and other living things different from nonliving things?
What might happen to a cell that continues to get bigger and bigger?
List five parts of all cells and their jobs.