AP Bio Chapter 7 Flashcards
What transport requires energy and how does it move
Active transport, Low to high concentration (or high to low)
All things want to __________________ in nature
Reach equilibrium
Which transport doesn’t require energy
Passive, high to low concentration
Diffusion
The passive transport of molecules across a semi-permeable membrane
Diffusion is ___________________ as long as it can fit
Inescapable
Net movement (diffusion)
For every 1 of a solute that moves, another will move in its place
What is the net movement at equilibrium
0
Osmosis
The diffusion of water
What direction does water move in osmosis
Opposite of expected solute movement
Gradient
The different in the moving of solutes
What is the transport called of a protein is used
Facilitated diffusion of
What are the proteins used in passive transport
Channel and carrier proteins. Enables ions, glucose to move through
Active transport needs energy to do what process and what does it use to get that energy
Protein hydrolyzes molecules with ATP
What types of proteins are used in active transport
Pumps
Tonicity
The relative measure of a solution concentration. Tonicity of cell’s environment has serious consequences for the cell
Hypotonic solution
Less dissolved solute that what’s inside
Ironic solution
Same amount of solute in the solution as what’s inside
Hypertonic solution
More solute in the solution than in what’s inside
How does a contractile vacuole use water
Fills up, then pushes it out
Bulk transport
Lots of stuff in/out
Endocytosis
Intake of large molecules, more specialized
Phagocytosis
Cell eating
Pinocytosis
Cell drinking
Receptor mediated cytosis
Cell being picky
Exocytosis
Release of large cellular products into outflow
