b3 Flashcards
(21 cards)
diffusion
net moevement of particles from higher concentration to lower concentration until it evenly spread out
osmosis
net movement of water molecule in a partially permeable membrane from a higher water potential to a region of lower water potential
plant uptake of water
keep cells turgid and prevents wilting
bring minerals in
animal cell uptake of water
keep the cells intact
maximum activity
what factor affect diffusion
-surface area
-concentration gradient
-distance
-temperature
how does surface area affect diffusion
large surface area= faster
how does temperature affect diffusion
higher temp increases rate of diffusion as particle gain more kinetic energy
how does concentration gradient affect diffusion
steeper the gradient,the faster diffusion
how does distance affect diffusion
greats the distance,slower diffusion
what happens to the blood cell when mixed in with salt concentrated solution
they lose water by osmosis and shrink
what happens to the blood cell when mixed in with water
they burst
calculate percentage change in mass
((F-i)/ix100
1 micro meter
0.001mm
function of many mitochondria in sperm cell
provide energy for movement
what will increase rate of diffusion across a gas exchange surface
decrease in the diffusion distance
name of molecule in red blood cell that combine with oxygen
heamoglobin
appearence of poatato 30 min after being immersed in distilled water
become rigidd
1 mm is
1000 um
plasmid in bacteria
mostly shaped like a circle but may take the shape o other thing too
factors that affect osmosis
surface area,temperature
sodium carbonatye function in enzyme test
create an alakaline environment
