CELL PARTS
Published on Nov 18, 2015
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PRESENTATION OUTLINE
CELL PARTS
and Functions
Cells are the basic unit of all organisms
Cells can carry out all of the life processes
Cells can be compared to factories, businesses, or schools
Each cell part has a specific role in maintaining homeostasis
The 3 Main Parts of a Cell
- cell membrane
- nucleus
- cytoplasm
Cell membrane
The bouncer - controls what enters and leaves the cell
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NUCLEUS
The control center of the cell
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THE NUCLEUS
- The NUCLEUS contains the genetic material for a cell
- DNA and RNA are examples
- The nucleus contains the instructions for making proteins
Cytoplasm
The jelly-like substance in the cell
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Cytoplasm
- provides cushion and support for organelles
- allows for easy transport of materials
- a fluid environment for organelles
The ER - A Transportation Network
- "endoplasmic reticulum"
- transport system
- materials move from place to place
- proteins made in the cell move this way
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Rough and Smooth ER
- rough ER - has ribosomes attached
- smooth ER - ribosomes not attached
- ribosomes - synthesize proteins
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What is so important about ribosomes and making proteins?
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Energy Release From Food
- mitochondria
- powerhouse of the cell
- where food is broken down
- energy is released
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Other Important Organelles
- golgi apparatus - packaging proteins
- vacuoles - storing water, food, wastes
- lysosomes - digesting unwanted material
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Plant cells also have
- cell wall - firm structure
- chloroplasts - photosynthesis
- large central vacuole
