Nitrogen

Question 1

How common is the element nitrogen in living beings?

Answer 1

It’s the 3rd most common element meant in living beings

Question 2

Name 2 reasons why organisms need nitrogen.

Answer 2

The form protein and dna

Question 3

What are the 2 processes of the nitrogen cycle

Answer 3

Nitrogen fixation and denitrification

Question 4

What are the 2 steps to nitrogen fixation

Answer 4

Nitrification (to form nitrates NO3) (small 3 w -) and Ammonification (to form ammonium NH4) (small 4 w +)

Question 5

Explain how bacteria fixates nitrogen

Answer 5

Bacteria are free in the soil and will transform atmospheric nitrogen N2 into ammonium NH4 (small 4 w +) (nitrogen fixing bacteria) and nitrates NO3 (small 3 w -), (nitrifying bacteria).

Question 6

Where are rhizobium found? In which type of plants?

Answer 6

In the root nodules of leguminous plants, like beans.

Question 7

Explain how decomposers fixate nitrogen

Answer 7

Bacteria and mushrooms will decompose animal waste and dead organisms into ammonium (NH4) (small 4 w +)

Question 8

Explain how lightning fixates nitrogen

Answer 8

Energy in the lightning strike will cause a reaction between atmospheric nitrogen
(N2) (small 2) and oxygen to form nitrates (NO3) (small 3 w -). These nitrates will catch in raindrops and fall into the soil.

Question 9

What is denitrification

Answer 9

The transformation of nitrates into atmospheric nitrogen to keep the nitrogen cycle balanced.

Question 10

What is denitrification

Answer 10

The transformation of nitrates into atmospheric nitrogen to keep the nitrogen cycle balanced.