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Cell Structure and Function

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Presentation on theme: "Cell Structure and Function"— Presentation transcript:

1 Cell Structure and Function

2 All Living things are made up of cells
Cell Theory All Living things are made up of cells Cells are the smallest working units of all living things All cells come from pre- existing cells through cell division

3 Cell A cell is the smallest unit that is capable of performing life functions

4 Examples of Cells Nerve Cell Red Blood Cell Bacteria

5 “Typical” Animal Cell

6 “Typical” Plant Cell

7 Cell Parts

8 Cell Membrane Outer membrane of cell that controls movement in and out of the cell Double layer

9 Cell Wall Most commonly found in plant cells & bacteria
Supports & protects cells

10 Inside the Cell

11 Nucleus Controls center of the cell Contains genetic material - DNA

12 Nuclear Membrane Surrounds nucleus Made of two layers
Openings allow material to enter and leave nucleus

13 Nucleolus Inside nucleus Contains RNA to build proteins

14 Cytoplasm Gel-like material between the nucleus and cell membrane

15 Endoplasmic Reticulum
Moves materials around in cell Smooth type: lacks ribosomes Rough type ribosomes embedded in surface

16 Ribosomes Each cell contains thousands Make proteins
Found on ribosomes & floating throughout the cell

17 Mitochondria Releases energy from nutrients

18 Golgi Bodies Area that stores and packages chemicals

19 Lysosome Transports undigested material to cell membrane for removal

20 Vacuoles Membrane- bound sacs for storage, digestion, and waste removal

21 Chloroplast Usually found in plant cells Contains green chlorophyll
Where photosynthesis takes place

22 Centriole Found in most animal cells

23 References: http://science-class.net/
Any Questions? References:


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