quick study dummy Flashcards
what are the phases of meiosis?
Interphase Prophase Metaphase Anaphase Telophase and cytokinesis
prac for enzymes: temp and graph
steady graph with sudden drop
prac for enzymes: pH and graph
sd
prac for enzymes: substrate concentration
increase then flattens
2 australian plants adaptation to conserve water:
eucalyptus leaves hang vertically downwards –> minimise SA exposed to sun
banksias have sunken stomates –> reduce transpiration
explain pressure flow hypothesis:
translocation in sugars,
enters at source of phloem ACTIVELY –> through osmosis water enters, creates pressure –> pushes the sugars and nutrients –> towards sink –> water leaves transpiration –> lower pressure
explain transpiration stream:
from root to leaf
draws water up xylem –> to leaf
cohesion
where does filtration occur?
in glomerulus, filters water, amino acids, glucose
where does reabsorption occur?
in proximal tube –> nutrients
loop of Henle –> water, salts
collecting tubule –> water, salts, urea
where does secretion occur?
in proximal tubule –> excess ions, chemicals
loop of Henle –> urea
processes of filtration and reabsorption in the nephron regulate body fluid composition.
filtration: under high pressure –> small stuff filered out (glucose, water, salts, amino acids, urea) regulates comp. by removing nitrogenous wastes
reabsorption: active movement of necessary substaces back to blood –> salts, glucose, changes com. of blood as it leaves kidney
define enantiostasis:
maintenance of metabolic and physiological functions in response to variations in environment
problems estuarine organisms face and adaption:
wide varying salinity levels –> must cope
mussels –> close valves at low tide –> keep internal salinity level/salt conc. same as salt water
problems estuarine organisms face and adaption:
wide varying salinity levels –> must cope
mussels –> close valves at low tide –> keep internal salinity level/salt conc. same as salt water
what does Aldosterone do?
increases salt levels–> blood vol restored
