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Def of a cell
- structural and functional unit of life.
- varible in apperance and funtion
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plasma membrane
- otter shell of the cell
- filters, receptors, mantains an electrical gradient
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phospholipid bilayer
- in plasma membrane, self assembed
- hydrophilc and hydrophobic
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integral protiens
- in bilayer of plasma membrane
- works as channles and pumps. serves as a receptor
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peripheral protien
exsists outside of bilayer in plasma membrane and IN the cell. strengthens bilayer and makes enzymes
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cholesterol
- in plasma membrane, stiff/waxy material
- strengthens the bilayer
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Nucleus
brain of the cell, contains genetic inheritance, controls everyday activities by controlling organs and functions
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chromatin
- dna ACTIVE form
- made of DNA and protiens, dark, used for cell division.
- different from chromosomes
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cytoplasm
- everything between nuclear membrane and plasma membrane.
- contains cytosol
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Free Ribosomes
- Make protien used INSIDE the cell
- float
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bound ribosomes
- stuck to er.
- make protien and are sent elsewhere
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Rough er
ribosomes stuck on it, makes protiens for transport
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smooth er
- no protiens, makes lipids and carbs
- detoxification
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golgi complex
acts as a cellular packaging and transport system.
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mitochondria
provides usable energy for the cell in for of ATP. Makes ATP.
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lysosomes
- membrane sac with digestive enzymes
- kills invading organisms for protection
- digest food particles and worn out organells.
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peroxisomes
special enzymes that break down hydrogen peroxide with catalase
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proteasomes
breaks down protiens
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microfilaments
- in cytoskeleton
- solid rods of actin
- participate in muscle contractions
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intermediate filament
- in cytoskeleton
- larger rods of protien, prevents tearing and creates muscle contractions
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microtubles
- in cytoskeleton
- hollow rods of protien tubuen
- moves substances over cell surface
- participate im cell division
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cillia
hairs that move substances
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centroles
- used during cell division
- helps form the mitotic spindle
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inclusions/vacules
storage centers
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