Cell Structure and Functions. Cell Theory There are three parts to the cell theory 1. all living...

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

Cell Structure and Functions. Cell Theory There are three parts to the cell theory 1. all living...

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