Carbon And Nitrogen Cycle

Question 1

With the Carbon Cycle, what leads off bacteria?

Answer 1

1. Respiration which leads to Carbohydrates in animals

2. This then joins with respiration from starch in plants and joins back into the atmosphere as Carbon Dioxide

Question 2

Describe how an atom of Carbon goes from the atmosphere to a fossil fuel. Include the processes.

Answer 2

It starts in the atmosphere
It then goes to starch in plants
From here feeding takes place which takes it to carbohydrates in animals
But the quickest route is to go from starch in plants, which then decomposes to become bacteria and into a fossil fuel

Question 3

What is Nitrogen Gas?

Answer 3

Very unreactive

Question 4

Describe the Carbon Cycle

Answer 4

1. It starts as Carbon Dioxide in the atmosphere.
2. Photosynthesis by plants converted into glucose
3. Respiration uses glucose to create Carbon Dioxide which is then released back into atmosphere
4. This then becomes decomposed and leads to fossils fuels

Question 5

One group of bacteria in the soil break down nitrate ions so that nitrogen is not available to plants.

Name this group of bacteria

Answer 5

Denitrifying bacteria

Question 6

In the Carbon Cycle what is the only thing that removes Carbon Dioxide from the air?

Answer 6

Photosynthesis by plants

Question 7

How does Dentrifying Bacteria differ from nitrogen fixing bacteria?

Answer 7

Dentrfpifying bacteria converts nitrates

Question 8

What happens after decomposing?

Answer 8

Feeding by animals as they eat off carbon compounds found in plants and animals
Decomposers feed off dead organisms with Carbon Dioxide released back into the atmosphere as a waste gas

Question 9

Describe the nitrogen cycle

Answer 9

Plants get nitrogen from their roots from absorbing nitrogen compounds
Animals get it from food

Question 10

What is the point of nitrogen?

Answer 10

So that organisms can get protein and other substances in the new tissue as they grow