Question

True or False?

1. The nitrogen cycle starts with plants
2.The nitrogen cycle has no beginning or end.
3. The nitrogen cycle ends with animals
4. consumers can get nitrogen directly from the atmosphere
5. Lighting can also fix nitrogen
6. Animals get nitrogen from eating other plants or animals.
7. organisms can use atmospheric nitrogen directly
8. You cells do not need nitrogen to make DNA
9. Plants and animals benefit from nitrogen-fixing bacteria

Answer 1

Answer:

1. true

2. true

3. false

4. false

5. true

6. true

7. true

8. true

9. true

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Answer 2

1. False. The first step in the nitrogen cycle is nitrogen fixation, which is the transformation of atmospheric nitrogen into forms that can be utilised by living things. Some microorganisms are responsible for this process.

2. True. The nitrogen cycle is an ongoing process with no start or stop points. It includes the transfer of nitrogen from the atmosphere to the soil and then to living things.

3. False. Animals do not necessarily mark the conclusion of the nitrogen cycle. As dead organisms or their waste products decompose, nitrogen can be released back into the soil.

4. False. Nitrogen cannot be obtained by consumers straight from the atmosphere. They must get it from the nitrogen-containing proteins and other compounds found in the plants and animals they consume.

5. True. By severing the molecules of nitrogen gas present in the atmosphere, lightning can restore atmospheric nitrogen. The resultant nitrogen atoms are then combined with oxygen to create nitrogen oxides.

6. True. Proteins and other nitrogen-containing compounds found in the plants and animals that animals eat are what provide them with nitrogen.

7. False. Most organisms are unable to directly use air nitrogen. Before it can be utilised, it must be transformed into other forms, such ammonia or nitrate.

8. False. As nitrogen is required for the formation of DNA, cells require nitrogen to produce DNA.

9. True. Nitrogen-fixing bacteria are helpful to both plants and animals because they transform atmospheric nitrogen into forms that can be utilised by living things. These bacteria play a crucial role in preserving the nitrogen cycle and making sure that there is adequate nitrogen available for plants and other organisms.

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