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30 Cards in this Set
- Front
- Back
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plasma membrane does what
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regulates materials coming in & out & is selective permeability
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components of plasma membrane:
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phospholipid bilayer;
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phosphate head is hydrophilic or phobic?
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hydrophilic
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fatty acid tails are philic or phobic
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hydrophobic
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what can come in plasma membrane?
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hydrophobic molecules & very small hydrophilic
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fluid mosaic model is...
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membrane is made up of proteins,cholesterol, and phospholipids;
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what keeps membrane fluid?
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cholesterol
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diffusion-
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movement of particles from area of hi to lo
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osmosis-
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diffusion of h20 acros selectively permeable membrane
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h20 moves from hi to lo or lo to hi?
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lo to hi
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phagocytosis-
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pseudopods are used to surround something & bring it in cell
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metabolism
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sum of all chemical reactions
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what is ultimate source of energy?
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sun
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1st law of thermodynamics
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energy is never gained or lost, only transformed
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2nd law
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amount of usable energy is decreasing & entroy is increasing
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what reaction releases energy? and do reactants or products have more energy?
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exergonic; reactants
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what reaction requires energy? and what has more energy
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endergonic; products
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loses electron
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oxidized
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gains electron
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reduced
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enzymes do what to chemical reactions
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speed them up
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the substance being worked on by enzyme
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substrate
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substance that interferes w/ an enxyme's activity
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inhibitor
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is allosteric inhibition competitive or non competitive?
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non
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does temp or pH affect enzymes
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yes
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what is equation for aerobic respiration
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glucose+oxygen=co2+h20+ ATP
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list 2 coenzymes
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NAD & FAD
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glycolysis starts w what? what does it turn into
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glucose ; pyruvate
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what is also made in glycolysis
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2 ATP and NADH
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kreb cycle starts w/ what; and what does it turn into
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pyruvate; acetyl CoA
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what else is made in kreb cycle
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NADH & FADH2 & CO2
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