factors affecting the rate of cellular respiration Flashcards
how does temperature affect rate of cellular respiration and atp production?
cellular respiration and atp production are highest when temperature aligns with the enzymes optimal temperature.
what happens when there is a below optimal temperature
enzymes and substrates have less kinetic energy so there are fewer reaction inducing collisions. this results in a lower rate of cellular respiration.
what happens when temp is above optimal temp
enzyme denatures and causes respiration rate to drop rapidly due to loss of enzyme function
how does ph affect rate of respiration
needs to be at optimal temp for enzymes to function. if both high and low it will denature
how does an increase in glucose and decrease in glucose affect rate of cellular respiration?
increase in glucose availability increases rate of cellular respiration, which increases rate of ATP production. a decrease in glucose availability decreases rate of cellular respiration, which decreases rate of ATP production.
what happens to increasing glucose rate after a period of time?
increasing glucose concentration will increase respiration rate until maximum level of respiration is reached and the graoh will plateu because enzymes involved in respiration have reached saturation point and are operating at their maximum capacity.
how does increasing oxygen rate increase respiration rate?
as levels of oxygen rise, rate of aerobic respiration increases, therefore more oxygen results in faster ATP production.
what happens to adding oxygen over time to the theorietical rate of respiration.?
at a certain point, assuming theoretical unlimited glucose, adding more oxygen does not increase rate of respiration as enzymes involved in the process are saturated and working at their maximum capacity.
how does enzyme inhibition affect rate of respiration?
concentration of enzyme inhibitors increases, rate of cellular respiration decreases.
how can effect of competitive reversible inhibitors be overcome?
effect of competitive reversible inhibitors can be overcome by increasing substrate concentration
what does increasing substrate concentration not do?
it doesnt reduce effect of irreversible inhibitors or reversible non competitive inhibitors.
what happens to the max possible rate of reaction in the presence of irreversible inhibitors or reversible non competitive inhibitors?
it reduces
are inhibitors always bad?
no, as they regulate metabolic pathways like aerobic respiration and anaerobic fermentation.
