Matter Cycles

Question 1

How does matter cycle from producers to heterotrophs?

Answer 1

heterotrophs eat autotrophs

Question 2

How does matter flow through an ecosystem?

Answer 2

producers (autotrophs) –> consumer (heterotrophs) –> decomposers –> environment

Question 3

How does matter get recycled?

Answer 3

decomposers release organic molecules from the dead carcasses of heterotrophs

Question 4

How does matter come back to the prodcuers?

Answer 4

takes in matter that is circulating around the atmosphere

Question 5

Carbon Cycle

Answer 5

cycle that shows how carbon travels within an ecosystem of the Earth

Question 6

How is cell respiration relevant to the Carbon Cycle?

Answer 6

organisms and everything on life releases carbon as a byproduct from cell respiration creating carbon as a waste product

releases CO2 into the atmosphere

Question 7

How is combustion relevant to the Carbon Cycle?

Answer 7

the process of burning fossil fuels releases stored carbon

releases CO2 into atmosphere

Question 8

How is decomposition relevant to the Carbon Cycle?

Answer 8

can lead to carbon sink that stores carbon and is turned into fossil fuels

ex) carbon dioxide

Question 9

How is photosynthesis relevant to the Carbon Cycle?

Answer 9

plants/autotrophs use the Carbon to convert it into food and is stored in the form of glucose/carbohydrates

Question 10

Human impacts on the carbon cycle

Answer 10

burning of fossil fuels, deforestation, cutting down trees

Question 11

What are the materials of carbon sink?

Answer 11

coal, oil, peat, natural gas

Question 12

What are the 6 common elements of living things?

Answer 12

oxygen, carbon, hydrogen, nitrogen, phosphorus, and sulfur

Question 13

4 types of processes that cycle matter

Answer 13

biological, chemical and physical, geological, and human activity

Question 14

Human activity that increases carbon in the atmosphere

Answer 14

combustion and extraction and burning of fossil fuels, deforestation

Question 15

Two processes that oxygen plays a major role in

Answer 15

photosynthesis and cellular respiration

Question 16

Nitrogen Cycle

Answer 16

cycle that shows how nitrogen is used and cycled within an ecosystem

Question 17

Why is nitrogen important?

Answer 17

it is used to make amino acids and build nucleic acids.

forms proteins, DNA, and RNA

Question 18

Nitrogen Fixation

Answer 18

process that converts nitrogen gas to ammonia

N2 –> NH3

Question 19

Nitrification

Answer 19

process that converts ammonia into nitrites/nitrates

NH3 –> NO2-/NO3-

Question 20

__% of the atmosphere is nitrogen gas

Answer 20

78

Question 21

Denitrification

Answer 21

process where soil bacteria obtain energy by converting nitrates into nitrogen gas

NO3- —> NH2

Question 22

Where are Nitrogen Fixing Bacteria located?

Answer 22

soil or roots of legumes (on nodules)

Question 23

Human activities that impact the nitrogen cycle

Answer 23

usage of fertilizers (contains loads of nitrogen)

Question 24

How does the usage of fertilizers affect the nitrogen cycle?

Answer 24

excess fertilizer runs off into nearby streams or ponds resulting in eutrophication

Question 25

Eutrophication

Answer 25

rapid growth of algae in bodies of water, due to high levels of nitrogen

Question 26

Balanced Equation for Photosynthesis

Answer 26

6CO2 + 6H2O –(light)–> 6O2+C6H12O6

Question 27

Balanced Equation for Cellular Respiration

Answer 27

6O2+C6H12O6 —-> 6CO2 + 6H2O