Chapter 3 Flashcards
Is phosphate hydrophilic or hydrophobic?
Hydrophilic
Are fatty acids hydrophilic or hydrophobic?
Hydrophobic
Why do we need multiple layers of phosphate?
To block the fatty acids from the water
What do you need in order to enter a cell?
Smaller or has no charge
What type of molecules can’t enter a cell?
Large or they have a charge
What type of molecules are receptors?
Proteins
What do glycoproteins do?
Detect which cells are from your body
What does diffusion mean?
Moves from an area of high concentration to low concentration
What does facilitated diffusion mean?
receptor help molecules that are too big or have a charge through the plasma membrane
What does Osmosis mean?
Molecules are too big so the liquid will move instead
What does hypertonic mean?
More molecules in the liquid instead of the cell so the water will move out of the cell
What does isotonic mean
The water will remain in the cell. (No change)
What does hypotonic mean?
Water moves into the cell due to the cell having more molecules
What is Isotonic for humans?
O.9% sodium chloride
What is the sodium-Potassium pump?
Using ATP the pump moves sodium and potassium ions in opposite directions. (Sodium from low to high concentration and potassium from high to low concentration)
What are the three types of endocytosis?
Phagocytosis, Pinocytosis and receptor - mediated endozytose
What happens during phagocytosis?
The plasma membrane swallows a large molecule and carries it into the cell
What happens during Pinocytosis?
Bring more extra cellar fluids into the cell
What happens during receptor- mediated endocytosis?
Bring molecules into the cell that are bonded to a receptor
What is excytosis mean?
To exit the cell
