Nitrogen part 2

These microorganisms change nitrogen compounds in dead organic matter and from body wastes excreted by animals into what? Name there abbrevitaions.

Ammonia(NH3) and ammonium(NH4+).

How do animals get their nitrogen?

Animals get their nitrogen from plants or animals that eat plants.

What does denitrifying bacteria do to nitrates?

Denitrifying bacteria convert nitrates from the soil into nitrogen gas or into gaseous compounds such as nitrous oxide or nitric oxide.

True or False? Fixed nitrogen may circulate only twice between organisms and the soil before denitrification returns it to the atmosphere. If false, state the reason.

False. Fixed nitrogen may circulate many times between organisms.

All living things require nitrogen and most organisms can use the nitrogen gas from the atmosphere. True or false? If false, state the reason.

False. Most organisms cannot use the nitrogen gas from the atmosphere.

Plants absorb some of the ammonium and use it to make proteins, iron, and other essential substances. True or False, if false, state the reason.

False. chlorophyll instead of iron

What plants have nitrogen fixing bacteria? What category do they follow? Name at least 5.

Legumes, soybeans, peanuts, alfalfa, clover, and longbeans.

What is the abbreviation nitrites?

N02-

What is the abbreviation for nitrates?

N03-

What is the chemical symbol for nitrogen gas?

N2

Do plants absorb most of the nitrates and use them in a different way as ammonia?

No, plants use nitrates the same way as ammonia.

What is the nitrogen cycle?

The nitrogen cycle is the circulation of nitrogen through the atmosphere, the soil and water, and the plants and animals of the earth.

What kind of nitrogen do higher plants and animals require?

They require nitrogen that has undergone a process of fixation by particular microorganisms.

True or false? Nitrites weren't absorbed by anything other than the nitrate bacteria. If false, state the reason.

True

What converts nitrites into nitrates?

nitrate bacteria

As _ converts nitrogen from the atmosphere into _ compounds, a series of processes called _ returns an approximately _ amount of nitrogen to the atmosphere. What do the processes mean?

nitrification, organic, denitrification, equal. Nitrification is a process where it converts atmospheric nitrogen into usable nitrogen compounds. Denitrification is a process when fixed nitrogen is converted back to atmospheric nitrogen by denitrifying bacteria.

The rest of the ammonia is changed into nitrites by _ bacteria.

nitrifying

What converts ammonia into nitrites?

nitrite bacteria

Nitrogen-fixing bacteria in the _ convert nitrogen from the _ into nitrogen-_ organic substances.

soil and water, atmosphere, containing