Unit 3.1 Flashcards
what defines molecule diffusion?
gradient concentration due to kinetic energy. because of concentration gradient, no ATPis needed. so diffusion is a passive process.
What facts affect rate of diffusion?
Size, small is faster.
Temparture, higher is faster.
Concentration, higher is faster.
Distance, shorter is faster.
What is Osmosis?
The diffusion of water across differentially permeable membrane.
What are solutes and solvents?
Solutes, particles that dissolve in water.
Solvents, what the solutes are dissolved in.
Water is living organisms solvent.
What name is the solute that cannot just diffuse across the membrane?
Non penatrating molecules.
Ex, NaCl, glucose, amino acids, ions.
us what is urea like and is it penatrating?
Like 100% water and yes.
Crenate, hemolysis?
Shrink and burst.
What forces water and solutes across a membrane?
Hydrostatic pressure.
What is defined as a passive process?
Filtration.
What are the two transportation protein?
Carriers and channel.
What are the characteristics of carrier protons and what are the two types of functions?
Carrier - specific molecule, saturation( limit to account of transport aka transport maximum = Tm) , competitors.
Carrier-mediate transport
-> passive, facilitate diffusion(is a helper to diffusion through membrane), no ATP(uses concentration gradient, from high to low)
-> active, primary and secondary active transport, requires energy(low to high).
A solute particles that cannot just diffuse across the membrane?
Non penetrating molecule, examples NaCl. glucose, amino acids and ions.
What are the three solutions in tonicity?
Isotonic, hypotonic, and hypertonic.
