cell structure and functions. cell theory there are three parts to the cell theory 1. all living...
TRANSCRIPT
Cell Structure and Functions
Cell Theory
There are three parts to the cell theory
1. all living things are made of one or
more cells
2. cells are the basic units of structure
and function in organisms.
3. All Cells arise from pre-existing cells
Cell Organelles
• What are organelles?• internal compartments
that carry out specific cell functions
• How are organelles beneficial to a cell?– They allow the cell to
grow larger and become more specialized
Smooth endoplasmic reticulum
• Syntheisizes steroids• Detoxifies poisons
(alcohol)• Transports
substances• Regulates calcium
levels for muscle contraction
Vesicle
• Membrane-sac that transports materials
Golgi Apparatus
• membrane-bound structure
• organelle modifies molecules and packages them into small membrane bound sacs called vesicles
Mitochondria
• Membrane bound organelles
• Powerhouse of the cell
• Energy production for cells
• Sites of aerobic respiration
• “mitochondria makes me mighty”
Lysosomes
• digests waste materials and food within the cell
• breaks down molecules into their base components with strong digestive enzymes
Assist with cell division : helps to move chromosomes
centrioles
Plant Cell
• Plant cells have different structures
• Contains:
– Cell wall– Chloroplast– Vacuole (large central,
takes up most part of cell)
• Microtubules• Vacuole• Golgi• Smooth E.R.• Rough E.R.• Nucleolus• vesicle
• Nuclear envelope• Cytoplasm• Microvilli• Ribosomes• Centrioles• Mitochondria
http://www.youtube.com/watch?v=Mszlckmc4Hw
http://www.bing.com/videos/search?q=cell+animation&mid=2096F8D769EE0D9F92E22096F8D769EE0D9F92E2&view=detail&FORM=VIRE3&adlt=strict
A. Extensions of membrane
B. Fluid portionC. Processes/packagesD. Synthesizes proteinsE. Transportation
(ribosomes attached)F. Transportation (also
makes lipids)
G. Transportation (move to cell membrane)
H. Internal supportI. Makes ribosomesJ. Barrier for nucleusK. Stores food/waterL. Releases energy in
foodM. Assists with cell
reproduction