Question

Pili, Fimbriae and flagella

• A. Play a role in motility in bacteria
• B. Are surface structures of bacteria
• C. Play a role in motility in eukaryotic cells
• D. Are elongated tubular structures made of a special phospholipid

Answer 1

Answer: (B)

Are surface structures of bacteria

Pili, Fimbriae and flagella are structures that are found on the cell wall of the bacteria. These are structures that are made out of cellular components like proteins, for example, Pilli is made up of the protein pilin and flagella is made up of the protein flagellin.

Flagella are longer than both pili and fimbriae. These are a surface structure of the bacteria.

So, the correct option is 'Are surface structures of bacteria'