<span>It depends on motor proteins and micro-tubules. Motor proteins are proteins that transform chemical energy into mechanical energy which helps cell movement and they also move along a surface. Micro-tubules are also proteins and they are structural components of the cytoskeleton. They are used as structures for movement with the vesicles .</span>
Answer:
when you put chemicals in water and the water gets chemically changed?
The answer would be B. nucleic acids.
Answer:
they developed some structures or parts to survive
the terrestrial environment
