Discussion Questions
1 The atmosphere is 80% nitrogen: why do you think plants and animals can't use nitrogen as it is found in the atmosphere?
Answer: nitrogen was first converted into organic compounds before the living organisms can take up.
2. Explain what is meant by nitrogen fixation.
Answer: Nitrogen fixation always occurs when bacteria convert nitrogen gas (N2) into organic compounds that living organisms take up.
3. What is the role of bacteria in the nitrogen cycle?
Answer: Bacteria actually uses and transforms the nitrogen into nitrogen that can again be used .
4.Why don't legumes need nitrogen-containing fertilizers?
Answer: Legumes "fix" nitrogen in nodules on their roots, so they do not need additional nitrogen-containing fertilizers.
5.Why is nitrogen so important for living things?
Answer: Because Nitrogen is a key building block in a number of important molecules, such as nucleic acids, amino acids, and proteins. Without it, life as we know it would be impossible.
6. What are the processes involved in the nitrogen cycle?
Answer: Nitrogen fixation, ammonification, nitrification, assimilation, denitrification.
|By: Sofia Nicole T. Bañas VII sikat|Naga City Science High School
