Ecosystems

Question 1

Describe how nitrogen in proteins in dead leaves is recycled to be absorbed by plants?

Answer 1

ref to, decomposers /bacteria/fungi;
proteins are broken down to amino acids;
by proteases;
amino acids converted to, ammonia/ammonium (ions);
deamination;
ammonia/ammonium ions, converted to nitrite ions;
nitrites converted to nitrate ions;
nitrification/oxidation/nitrifying bacteria;
nitrate ions absorbed by plants;

Question 2

Name the process of converting atmospheric nitrogen?

Answer 2

nitrogen fixation

Question 3

How is nitrogen fixation done?

Question 4

What is decomposition?

Answer 4

Change of animal waste into ammonium compounds

Question 5

Effect of nitrogen containing fertilizes have in this ecosystem?

Answer 5

Eutrophication
Death of acquatic life
Increased decay
More bacterial activity
BOD of water increases due to bacteria respiring
Acquatic life does

Better growth of plants
More food for fish