Question

question 17 of 20 : select the best answer for the question. (image by ladyofhats cc by 3.0, via wikimedia commons.) 17. this feature of the prokaryotic cell helps the cell to stick to surfaces.
a. nucleoid region
b. flagella
c. cell wall
d. pili
mark for review (will be highlighted on the review page)
<< previous question
next question >>

Explanation:

To solve this, we analyze each option:

• Option A: The nucleoid region contains the cell's genetic material (DNA) in prokaryotes, it doesn't help in sticking to surfaces.
• Option B: Flagella are used for the movement of the prokaryotic cell, not for adhesion to surfaces.
• Option C: The cell wall provides structural support and protection to the prokaryotic cell, its main function is not adhesion to surfaces.
• Option D: Pili (singular: pilus) are hair - like structures on the surface of prokaryotic cells. They help the cell to stick (adhere) to surfaces, such as other cells or inanimate objects.

Answer:

D. Pili