Answer:
B. extremophiles
Explanation:
Archaea are often called <u>extremophiles</u> because they live in areas where most living things couldn't survive.
In terms of macromolecules, needed and utilized by organisms to carry out essential metabolic chemical reactions and for maintaining structure would be Lipids.
Lipid based molecules or Fats tend to store the most energy, as breaking chemical bonds connecting fatty acid chains of long hydrocarbons releases quite a bit of energy.
Yeast lacks a membrane-bound nucleus. The onion skin cell has one
A vertebrate is an animal with a backbone.
