SULFUR CYCLE

Question 1

Different Steps of the Sulfur Cycle

Answer 1

1) Formation of Inorganic Sulfur
2) Oxidation of Inorganic Sulfur to Sulfate (SO42−)
3) Assimilative Reduction of Sulfate to Sulfide (S2−)
4) Incorporation of Sulfide into Organic Compounds

Question 2

Formation of Inorganic Sulfur occurs through two different processes. what are these?

Answer 2

Biological, by decomposers
Geological, by weathering from geological uplift

Question 3

Oxidation of Inorganic Sulfur to Sulfate (SO42−) involves two steps. what are these?

Answer 3

1. Hydrogen sulfide is oxidized to produce elemental sulfur by certain photosynthetic bacteria
2. Elemental sulfur is then converted to sulfate by chemolithotrophic bacteria

h2s to s, s to so4(-2)

Question 4

photosynthetic bacterias that turn hydrogen sulfide into elemental sulfur

Answer 4

Chlorobiaceae and Chromatiaceae species

chlorobia
chromatia

Question 5

bacteria that convert elemental sulfur to sulfate?

Answer 5

chemolithotrophic

Question 6

Assimilative Reduction of Sulfate to Sulfide is also known as?

Answer 6

sulfur reduction

Question 7

sulfur reduction is performed by?

Answer 7

plants, fungi and microorganisms

Question 8

what microorganisms can perform sulfur reduction?

Answer 8

desulfovibrio and desulfobulbus

Question 9

steps in sulfur reduction?

Answer 9

sulfate to sulfite to hydrogen sulfide

Question 10

what happens in step 4, Incorporation of Sulfide into Organic Compounds

Answer 10

sulfide is taken up by plants and turned into organic compounds, it is also assimilated into animals when the animals eat the plants

Question 11

importance of sulfur cycle?

Answer 11

1. essential component of all proteins and some vitamins and hormones
2. produce fossil fuels
3. contributes to metal deposits, act as an oxidizing and reducing agent
4. source of energy to the sulfur-reducing bacteria
5. Reducing global warming by absorbing the ultraviolet radiation
6. Helping in the growth of plants

epic
parachute
contest
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Question 12

How do humans affect the Sulfur
Cycle?

Answer 12

1) Releasing sulfur from oil and coal-based power
plants
2) Processing of sulfur-containing metals
3) Using sulfur-containing fertilizers

Question 13

What are the effects of Sulfur
dioxide?

Answer 13

1. Difficulty breathing
2. Respiratory system issues
3. Asthma
4. Sneezing and coughing
5. Changes in lungs function
6. Irritation of the eyes

DRAStic Changes and Irritation

Question 14

HOW TO PREVENT SULFUR
DIOXIDE POLLUTION?

Answer 14

1. Use fuel-efficient vehicles
2. Consider renewable sources of energy
3. Dispose of sulfur dioxide waste properly