All of the Following Statements Concerning Pili Are True EXCEPT

question 30

Multiple Choice

All of the following statements concerning pili are true EXCEPT:

• A) A bacterial cell will usually have only one or two pili.
• B) Pili are composed of protein called pilin.
• C) Not all bacteria have pili.
• D) Pili are longer than fimbriae and flagella.
• E) Pili facilitate the transfer of DNA among bacterial cells.

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Definitions:

Carbon

A chemical element with symbol C, an essential building block of life, found in all organic compounds and some inorganic ones.

Nitrogen

A chemical element with symbol N and atomic number 7, essential for life, it makes up a major part of the earth's atmosphere and is a key component of all proteins.

Phosphorus

A chemical element (P) that is essential for the formation of DNA, RNA, and ATP, playing a critical role in energy storage and transfer within cells.

Nitrification

A microbial process by which ammonia is converted into nitrate, an important step in the nitrogen cycle.