Given a scientific question, generate a correct answer to it.

Input: Consider Input: What are monosaccharides and disaccharides also called?

Output: simple sugars

Input: Consider Input: What bodily defense can be acquired in an active or passive way, and can be natural or artificial?

Output: immunity

Input: Consider Input: What are single-celled or colonial organisms that do not have membranebound nuclei?
Output: prokaryotes