Bacterial Biology Quiz

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What is a major source of phosphorus for bacteria?

Sulphur salts

Phosphate salts

Organic sulphur

DNA and RNA nucleotides (correct)

What happens to Fe+2 in the presence of O2?

It remains unchanged

It becomes insoluble

It is reduced to Fe3+

It is rapidly oxidized to Fe3+ (correct)

What is the purpose of siderophores in bacteria?

To oxidize Fe+2 to Fe3+

To bind Fe3+ in the environment and facilitate uptake by the cell (correct)

To secrete organic compounds for energy production

To reduce Fe3+ to Fe2+ inside the cell

What are the two types of culture media mentioned in the text?

Defined and complex media Signup and view all the answers

What are growth factors in the context of bacterial growth?

Preformed organic compounds required by the cell for growth but cannot be synthesized by the cell Signup and view all the answers

What is the purpose of culture media in microbiology?

To isolate pathogens and provide material for research Signup and view all the answers

What is the difference between defined and complex media?

Defined media provide all nutrients necessary for growth, while complex media have variable compositions Signup and view all the answers

What happens to Fe3+ in the presence of O2?

It forms insoluble compounds Signup and view all the answers

What are growth factors in the context of bacterial growth?

Preformed organic compounds required by the cell for growth but cannot be synthesized by the cell Signup and view all the answers

What is the major source of phosphorus for bacteria?

Organic phosphorus in DNA, RNA nucleotides, and phospholipids Signup and view all the answers

Bacterial Biology Quiz

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Questions and Answers

What is a major source of phosphorus for bacteria?

What happens to Fe+2 in the presence of O2?

What is the purpose of siderophores in bacteria?

What are the two types of culture media mentioned in the text?

What are growth factors in the context of bacterial growth?

What is the purpose of culture media in microbiology?

What is the difference between defined and complex media?

What happens to Fe3+ in the presence of O2?

What are growth factors in the context of bacterial growth?

What is the major source of phosphorus for bacteria?

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