Membrane Structure
the cell membrane is made of mostly _______________
phospholipids!
passive transport does or does not use energy?
does not use energy!
these are the three letters that represent energy in the body
ATP
what is the diffusion of water called
osmosis
this is the power house of the cell
mitochondria
there are two layers of phospholipids we call this a ___ layer
bi layer!
passive transports moves from ______ solutes to ______ solutes
More to less
active transport does or does not use energy
does
water moves from ______ amounts of water to _________ amounts of water
more to less
these cells have cell membranes
ALL
the hydrophobic (scared of water) part of the phospholipid is the
Fatty acid tails
true or false passive transport does not use protein channels
false facilitated diffusion uses protein channels
active transport moves from __________ to ___________
less to more
water moves towards ________ solutes
more
name the type of cell that does not have a nucleus
prokaryotic!
name one other molecule that is a part of the membrane
proteins, cholesterol, carbohydrates
true or false osmosis is a form of passive transport
true
true or false active transport can move molecules directly through the plasma membrane
false
if a cell is in a hypertonic solution it will ________ because there are ________ solutes in it than the cell
shrink more
name molecules that can move through passive transport
because the cell membrane moves and is NOT static we call it this
fluid mosaic
true or false water moves through the membrane only through protein channels
False
this is a type of active transport that happens when a protein or bacteria is taken in and envoloped by the cell membrane and it is pinched off
endocytosis
true or false water can pass through the plasma membrane with out using a protein channel
true
list a reason why viruses are not considered alive
- don't respond to stimuli
- can't reproduce with out a host
- can't produce energy with out a host
- super small so they don't have things like mitochondria or ribosomes