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30 Cards in this Set

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