When doing osmosis for a plant cell, and the cellmembrane gets bigger, what increases?
Turgor Pressure
What type of transport requires energy?
Active Transport
Molecules diffuse across the membrane and does not require energy or work
Passive Transport
3 Examples of Passive Transport?
Osmosis, diffusion, and facilitated diffusion
3 Steps of Facilitated Diffusion?
Proteins act as carrier molecules for materials
Pick up a molecule and carry it across the membrane
Gated Channel -hormone influenced protein
Hormone influenced protein
Gated Channel
What is this supposed to be?
Facilitated Diffusion
What part of Facilitated Diffusion is this?
The Phospholipid Bilayer
What part of Facilitated Diffusion is this?
(2)
The protein and the gated channel
(the gated channel is the part with the rigges)
Regular molecules go through what part?
Protein
Large Molecules go through what part?
The Gated Channel
Needs energy to move molecule across membrane
Active Transport
Against concentration gradient
Active Transport
The Sodium and Potasium Pump is an example of what?
Active Transport
Explain the Na-K+Pump
(sodium and potasium pump)
(9)
Helps nerve cells generate nerve signals
Na increase out against concetration gradient
ATP (energy) changes shape of protein
Picks up K and enters cell and then changes shape again
3 Na Out and 2 K in
Na is low concetration inside the cell
K is high concentration inside the cell
1/3 of ATP is used in pump during rest
Carrier Protein with 2 configurations
What step of the sodium potasium pump is this?
Step 1
What step of the sodium potasium pump is this?
Step 2
What step of the sodium potasium pump is this?
Step 3
How many steps are there in the sodium potatsium pump?
3
What you will have to know for the Sodium and Potasium Pump:
What type of transport it is:
What has to change shape several times:
What gives that thing energy to change shape:
Active Transport
Protein
ATP gives it energy to change shape
What does the exocytosis do?
Exports materials
What are 2 examples of exocytosis?
Crying/cells in the pancreas
Why is crying an example of exocytosis?
Tear glands use exocytosis to export a salty solution containing proteins
Why are specific cells in the pancreas examples of exocytosis?
They manufacture the hormone insulin and secrete it into the bloodsteam by exocytosis
What is this?
Exocytosis
What step of Exocytosis is this?
Step 1
What step of Exocytosis is this?
Step 2
What step of Exocytosis is this?
Step 3
When the cell takes in macromolecules and other particles by forming vessicles or vacuoles from its membrane.