NOTES –2 Main Groups of NOTES –2 Main Groups of Eukaryotic CellsEukaryotic Cells

All All eukaryoticeukaryotic cells have cells have a… a…

cell membranecell membrane,,

cytoplasmcytoplasm, ,

and and DNADNA in a in a nucleusnucleus

(and (and ribosomesribosomes too) too)

What are the 2 groups of What are the 2 groups of eukaryotic cells?eukaryotic cells?1.1. Animal cellsAnimal cells – flexible cells found in animals that – flexible cells found in animals that

have a nucleus and other parts (organelles)have a nucleus and other parts (organelles)

Microscopic Images of Animal Cells

What are the 2 groups of What are the 2 groups of eukaryotic cells?eukaryotic cells?

2.2. Plant cellsPlant cells – rigid cells found in plants – rigid cells found in plants that have a nucleus and other parts that have a nucleus and other parts (organelles)(organelles)

Plant & Animal Cells are Eukaryotic Cells

Therefore, they have structures in common with all eukaryotic cells. Nucleus Cell membrane DNA (in the nucleus) Cytoplasm Ribosomes

They also have other organelles.

What is the difference What is the difference between animal cells and between animal cells and plant cells?plant cells?

• • Plant cells have 2 parts that are NEVER Plant cells have 2 parts that are NEVER FOUND FOUND in animal cells: in animal cells: cell wallcell wall – a rigid structure that – a rigid structure that

surrounds surrounds the cell membrane of a plant the cell membrane of a plant cell and gives the cell shape, support, cell and gives the cell shape, support, and protection and protection

chloroplastschloroplasts – plant cell – plant cell parts that parts that captures the sun’s energy to make food captures the sun’s energy to make food for the plant (photosynthesis)for the plant (photosynthesis)

Microscopic Images of Plant Cells

Why don’t animal cells have Why don’t animal cells have cell walls or chloroplasts?cell walls or chloroplasts?

Animals move so they need flexible Animals move so they need flexible cells; cell walls make cells rigid cells; cell walls make cells rigid

Animals get food by eating other Animals get food by eating other living things so they don’t need living things so they don’t need chloroplasts to make food chloroplasts to make food

Animal vs PlantAnimal vs Plant

Another way to look at it…Another way to look at it… There are 2 main groups of eukaryotic There are 2 main groups of eukaryotic

cells, animal and plantcells, animal and plant

Another way to look at it…Another way to look at it… Plant cells have a rigid cell wall and animal Plant cells have a rigid cell wall and animal

cells do not (they are flexible)cells do not (they are flexible)

Another way to look at it…Another way to look at it… Plant cells have chloroplasts for making Plant cells have chloroplasts for making

food and animal cells do notfood and animal cells do not