bacteria, nitrogen cycle Flashcards
what is nitrogen fixation
when the nitrogen in the air gets turned into nitrates
if the soil has plenty of oxygen in active uptake what happens
the root hair cells carry out aerobic respiration and make plently of energy they can carry out active uptake and move the minerals in the into the cells against the concentration gradient
name the bacteria un the nitrogen cycle found in water logged soils
de-nitfifying bacteria [anearobic]
whats the function of de-nitfrying bacteria
it turns the nitrate in the soil back into nitrogen in the air
what is decomposition
when aniamls die they are broken broken down into ammonia by decomposers
what are the 2 decomposers
bacteria and fungi
whats nitrification (nitrifying bacteria)
these convert ammonia into nitrates
what do the nitrifying bacteria nitrogen fixing bacteria and decomposers do for the soil
they help make nitrates they are all aerobic
why do farmers plant root nodules in the soil
because they make nitrates this make the soil richer in nitrates
what are nitrates used for
to make proteins for growth
what do saprophytic decomposers produce
it produces ammonia by extra-cellular digestion
