Cell Structure

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• Cell function membrane controls exchange chemicals environment.  selectively
• Membrane structure mitochondrion micrometer diameter  surrounded folded cristae
• Er sacs covered protein endoplasmic reticulum?  system flattened
• Large small subunit function ribosomes site protein synthesis  
• Golgi vesicles body packages proteins membrane-bound inside cell
• Part funtions microtubules make cytoskeleton determines cell shape 
• Microtubules found centriole hollow cylinder  formed ring short
• Cell plant walls found membrane  made cellulose fibres 
• Stage  light place chloroplasts found plant cells photosynthesis
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• Soluble permeability permeable molecules water structures cell membrane
• Cell cell  roles plasmodesmata 5mks)  transport water organic
• Big cell membrane nm how
• Cytoplasm fluid contained cell membrane chemical reactions occur
• Nucleus cell's genome chromosomes long dna determines sequence
• Enters nucleus proteins  nucleotides  atp  hormones
• Exits nucleus mrna  ribosomes  protein synthesis
• Function mitochondria produce energy metabolic processes form atp
• Diameter mitochondrion micrometer  what is
• Lysosomes round sacs surrounded single membrane hydrolytic enzymes 
• Diameter lysosome micrometers  what is
• Function lysosomes break-down digest unwatned organelles phagocytes harmful
• Nanometers diameter ribosome 80s 70s
• Microtubules long hollow tubes found cytoplasm made tubulin
• Centrosomes act microtubule organizing centers assembly make spindle
• Diameter chloroplasts micrometers  what is
• Fluid called structure chloroplast 5mks membranes sacs thykaloid
• Membrane animal plant cell vacuole bound organelle present
• Aye formula magnification em equals
• Resolution ability distinguish objects close together  higher=smaller
• Nanometers maximum resolution light microscope objects closer
• Range visible light wavelength 400nm violet 700nm red
• Ribosome diameter light microscope nm shortest visible wavelength
• Half wavelength radiation view light general rule limit
• Length specimen calculate magnification m=i/a a=i/m  measure millimeters
• Scale calculate magnification bar ruler measure length millimeters
• O.c ocular measure eyepiece units number total millimeters
• Resolution electron microscope nanometers what
• Transmission electron microscope  tem)?  beam pass specimen viewed
• Electron beam scanning microscope sem scan surfaces specimen
• Resolution scanning electron microscope 3nm 20nm
• Higher electron microscope differ light specimen alive black
• Light microscope electron lower differe visible specimen alive 
• Eukaryote organism nucleus a what
• Prokaryote organism nucleus a what
• Cell structures present prokaryote wall peptidoglycan surface membrane 
• Membrane additional features prokaryote flagellum  capsule plasmid   infolding
• Size virus 20-300nm what is
• Size ribosome found chloroplasts mitochondria 70s
• Apoplast symplast cell differences pathways wall resistance living

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