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Unit 2: Cells.

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Presentation on theme: "Unit 2: Cells."— Presentation transcript:

1 Unit 2: Cells

2 The Cell Theory The cell is the basic unit of structure and function (a.k.a. – life) All living things are made up of 1 or more cells Cells come from other, preexisting cells (a.k.a. – reproduction)

3 What is a cell? It is the smallest unit of life that carries out life functions Animal Cell Plant Cell

4 What’s Inside? Organelles
tiny structures within a cell that perform specific jobs to keep the cell alive

5 Important Organelles Cytoplasm - gel-like material inside cells

6 Important Organelles – Continued…
Cell Membrane - protects cell and gives it shape and controls what enters and leaves the cell. Cell Membrane

7 Important Organelles – Continued…
Nucleus - directs cell activities (brain) Nucleus

8 Important Organelles – Continued…
Endoplasmic Reticulum (ER) - movement of materials throughout cell ER

9 Important Organelles – Continued…
Ribosome - makes proteins Ribosomes

10 Important Organelles – Continued…
Mitochondria - the powerhouse of the cell (converts food into energy for the cell) Mitochondria

11 Important Organelles – Continued…
Chromatin/Chromosomes (DNA) - contains genetic information (inside the nucleus) Chromatin

12 Important Organelles – Continued…
Chloroplast - takes energy from the sun and makes food for the PLANT cell (not found in Animal Cells) Chloroplast

13 Important Organelles – Continued…
Cell Wall - supports and protects PLANT cells (not found in animal cells) Cell Wall

14 Important Organelles – Continued…
Vacuole - storage of food and water Vacuole

15 Important Organelles – Continued…
Golgi Body - packages and moves proteins Golgi Body

16 Important Organelles – Continued…
Lysosome - digests wastes Lysosome


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