Structure and Function
Diffusion and Osmosis
Passive Transport
Active Transport
Misc.
100
What the cell membrane is mostly composed of
Phospholipids
100
Diffusion happens anytime there is a difference in concentration in one place compared to another. This is called what?
What is concentration gradient
100
During passive diffusion, energy is _________________
not required
100
Active transport requires energy in the form of what
ATP
100
Substance in which a solute is dissolved
What is solvent
200
This property allows only certain materials to go into and out of cell
Selective permeability
200
During diffusion, molecules move from a _____ concentration to a ______ concentration
What is high to low concentration
200
What grabs molecules, changes shape, and flips across to the other side like a revolving door
Carrier protein
200
Proton pumps transport
What is hydrogen ions
200
Concentration is lower outside than on the inside
What is hypotonic
300
The portion of the cell membrane that does not like water
Hydrophobic tails
300
Diffusion continues until the concentration is equal in the space.
What is equilibrium
300
What creates a tunnel through which molecules can pass
Channel proteins
300
Proton pumps use proteins that span the membrane to move molecules.These proteins are called
integral proteins
300
Cell is placed in a hypertonic solution. Water will travel ________ and make the cell _________
Outside Shrink or shrivel
400
Cells maintain a stable environment/status by this property ?
Homeostasis
400
The movement of water molecules across a cell membrane
What is osmosis
400
Na+, Cl-, Ca++, and K+ are examples of molecules that go through what kind of channel
Ion channels
400
Active transport requires energy in the form of ATP. This ATP is made during
Cellular respiration
400
Example of a osmosis in our body.
When substances pass through cell membrane
500
A phospholipid is made of a polar group, fatty acid chain, and what else ?
phosphate
500
Proteins that allow water molecules to get past the hydrophobic middle of a membrane
What are aquaporins
500
Carrier proteins carry this essential molecule inside the cell to get converted into ATP during respiration .
What is glucose
500
What is the process of releasing things out of cells and the process of taking substances into cells
What is endocytosis and exocytosis
500
Substance that reduces the fluidity of cell membrane .
Cholesterol
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