Fact 1: Flagella help prokaryotes move.

Fact 2: Flagella and cilia are similar in structure.

Given the two facts above, answer the question "something what to cilia help prokaryotes move." with the following options: 
- it needs them
 - Chemical energy
 - similar in structure
 - It helps them survive
 - it keeps an organism warm
 - major threat to health
 - An object is seen
 - The bending of a ray of light


 

   similar in structure      