2 Nitrogen cycle

Question 1

nitrifying bacteria

Answer 1

bacteria which convert ammonium and nitrites in soil to nitrates

Question 2

nitrification

Answer 2

process carried out by bacteria which convert ammonium in soil to and nitrites and soil to nitrites to nitrates

Question 3

denitrification

Answer 3

process carried out by bacteria which break down nitriates in soil to nitrogen gas

Question 4

denitrifying bacteria

Answer 4

bacteria which break down nitrates in soil to nitrogen gas

Question 5

root nodule

Answer 5

structure in roots of some plants which contains nitrogen fixing bacteria

Question 6

nitrogen fixation

Answer 6

process where bacteria in root nodules convert nitrogen gas to nitrates

Question 7

decomposers

Answer 7

bacteria and fungi which break down dead animals and plants releasing nutrients into the soil

Question 8

ammonium

Answer 8

nitrogen compound produced when animal and plant protein is decomposed by bacteria and fungi

Question 9

nitrites

Answer 9

nitrogen compound produced when ammonium in soil is nitrified by bacteria

Question 10

nitrates

Answer 10

nitrogen compounds absorbed by plant roots - they are produced from nitrification of nitrites

Question 11

protein

Answer 11

form of nitrogen found in plants? and animals? bodies