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WHS Cell Transport
How molecules get in and out of the cell
42
Biology
10th Grade
09/14/2009

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Term
Why is cellular transport important?
Definition
*Cells need substances from blood
*Cells need to dump wastes into blood
Molecules made in one type of cell are used in other cells around the body
Term
What cell transportation do kidneys do?
Definition
Kidney cells take in wastes from the bood and form urine.
Term
What cell transportation do Liver cells do?
Definition
*Remove toxins from blood
*Take in sugar and convert to glycogen
Make hormones that are released into blood
*Make blood proteins and release into blood
Term
What do nerve cells do?
Definition
Ions (Na+,K+) move in and out of nerve cell membranes to create nerve impulses
Term
Cystic Fibrosis
Definition
Cl (chloride) doesn't move correctly through cell membrane
Term
Familial Hypercholesterolemia
Definition
Cholesterol doesn't move and builds up in cholesterol bumps
Term
What are examples of things that interfere with the movement of molecules in and out of cells?
Definition
Drugs, Toxins, and Medicines
Term
What are some characteristics of a cell membrane?
Definition
Selectively permeable, allows CERTAIN substances in and out the cell membrane.
Term
Cell membranes are made up of phospholipids...what are phospholipids made up of?
Definition
*phosphate group/hydrophilic(water loving)
*2 fatty acieds/hydroPHOBIC(water fearing)
Term
How are phospholipids arranged in the cell membrane?
Definition
Arranged in a lipid Bilayer
Term
What do Transport or transmembrane proteins do?
Definition
Act as carriers or channels to transfer chemicals through lipids
Term
What do Integral/Enzyme proteins do?
Definition
Regulate biochemical reactions in the cell
Term
What do receptor proteins do?
Definition
recognize and bind to substances outside of cell like signal molecules...used for communication
(hormones) Molecular "triggers"
Term
What are Glycoproteins for? (carbohydrate end)
Definition
Cell Recognition:What type of cell is it? Heart/Liver...etc. "Marker" to identify the cell.
Term
What does cholesterol do? (steroid/lipid)
Definition
Gives cell fluidity...(especially for cold weather, so membrane doesn't freeze)
Term
Passive Transport
Definition
Molecules flow with concentration gradient. Go from high concentration to low concentration. NO energy or ATP required.
Term
Diffusion (a type of passive transport)
Definition
Molecules moving from HIGH concentration to LOW concentration until equilibrium is reached.
Term
Osmosis (special type of diffusion, passive transport)
Definition
Movement of WATER from high water concentration to a low water concentration through a SELECTIVELY permeable membrane.
Term
How many types of osmotic environments are there?
Definition

3, three, tres

 

Hypotonic, isotonic, hypertonic

Term
Hypotonic environment (one of the 3 osmotic environments)
Definition
Little solute/LOTS of water
Term
Hypertonic environment (one of the 3 osmotic environments)
Definition
LOTS of solute/ little water
Term
Isotonic Environment (one of the 3 osmotic environments)
Definition
EQUAL amounts of solute and water
Term
Facilitated Diffusion
Definition
*Passive transport, with concentration gradient, high to low, uses a protein carrier, carries sugar and amino acids
Term
Active Transport
Definition
USES energy/ATP, goes AGAINST concentration gradient, low to high, uses a protein carrier, carries Na+/K+ ions
Term
Large molecule transportation
Definition
Endocytosis (vesicle/lysosome, phagocytosis,pinocytosis)
Term
Movement of food into the cell?
Definition
Phagocytosis
Term
Movement of liquid into the cell?
Definition
Pinocytosis
Term
Exocytosis
Definition
Remove waste/products from the cell
Term
[image]
Definition
Enzyme or integral protein
Term
[image]
What transport process is this?
Definition
Diffusion:
Gases are moving from hi to low.
Term
[image]
Definition
Oxygen (O2)
Term
[image]
Definition
Peripheral Protein
Term
[image]
Definition
Phospholipid Heads
Term
[image]
What structure in this cell membrane is Hydrophobic?
Definition
Phospholipid Tails
Term
[image]
Definition
Peripheral Protein
Term
[image]
What type of solution is this cell in?
Definition
Hypertonic solution
Term
[image]
What type of solution is this cell in?
Definition
Hypotonic solution
Term
[image]
What type of solution is this cell in?
Definition
Isotonic Solution
Term
[image]
What type of solution is this cell in?
Definition
Hypotonic solution
Term
[image]
Definition
Hypertonic
Term
[image]
What type of solution is this cell in?
Definition
Hypotonic
Term
[image]]
What type of solution is this?
Definition
Hypertonic
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