Cells

1
Cells

• Unit 4

2
What is a cell?

• Remember, a cell is the basic unit of life!!!

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What are the 2 types of cells?

• There are 2 types of cells
• Prokaryotic
• 2. Eukaryotic

4
How do I know the difference between prokaryotic
and eukaryotic cells?
Prokaryotic
Eukaryotic

• Nucleus
• Very Complex
• Many cells
• Example Plants, Animals, Fungi, Protists

• No nucleus
• Very Simple
• One cell
• Example Bacteria

• Have DNA
• Have cell membrane
• Are living

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There are rules for cells called
The Cell Theory
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• All living things are composed of cells

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• 2. Cells are the basic units of structure and
  function in living things

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• 3. New cells are produced from existing cells

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What are cells made of?

• Cells have little organs that help them work,
  called organelles.

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When many similar cells come together

• When similar cells come together to perform a
  specific function its called a tissue.

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When tissues come together

• When tissues come together to perform a specific
  function its called an organ

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When organs come together

• When organs come together to perform a specific
  function its called an organ system

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When all the organ systems work together

• When all the organ systems work together its
  called an organism

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Organelles