BIO CH 6 JAWN.docx - Overview the fundamental units of life Cells are the smallest unit of life All cells are related and have descendants Microscopy

BIO CH 6 JAWN.docx - Overview the fundamental units of life...

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Overview: the fundamental units of life - Cells are the smallest unit of life - All cells are related and have descendants
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Microscopy - Magnification ie. 2x as large, 10x as large - Resolution = clarity, minimum distance between two distinguishable points (ie, harder to see two dots from far away) - Resolution and wavelength are inversely correlated - Scanning electron microscopes- focus a beam of electrons - transmission - also focuses a beam, but goes THRU the subect, showing internal structures (think cross-sections) 6.2 Eukaryotic cells have internal membranes that compartmentalize their functions - Used to compartmentalize the cell - Hard to treat eukaryotic things bc humans are also eukaryotic, and you may end up damaging your cell - If a bacteria gets u sick , there was ways to treat bacteria that wont harm you - Fungi, tapeworm, plant infects much more diff to deal w All cells have: - Plasma membrane - Cytosol (semifluid substance) - Chromosomes - Ribosomes (people have ribosomes, thus if you are attacked by an outher chromosome, some medication may attack your won ribosomes) Prokaryotic cells: - Instead of nucleus, nucleiod - No membrane bound organelles (unorganized, simples, cant perform complex functions) - Cytoplasm bound by the plasma membreane - Bacillus coagulans - Has many layers to prevent and protect from attack by human body - Can go thru binary fission (element of asexual representation) Eukaryotic cells: - Dna in a membraneous nuclear envelope - Membrane bound organelles - Cytoplasm between membrane and nucleus Typically are much larger than prokaryotic - Plasma layer is a bilipid layer that is selectively permeable that can allow water, butrienest, oxygen etc etc
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