The answer to this question is: carbohydrate.
There are 3 kinds of macromolecule class: carbohydrates, lipid and protein. Carbohydrate used mostly for energy. The example for this class sugar, fiber and starch.
Lipid can be used for energy storage and make some hormone. The protein used for making muscle and cells component.
I'm pretty sure it's A or B, leaning a little bit towards B.
Answer:
Explanation:
el mapa conceptual de la celula
2. to keep the body's internal environment in balance
The nucleus is the control center of a cell in eukaryotes. It is protected by the nuclear membrane. The nucleus holds all of the cell’s genes, which are segments of DNA, found in the chromosomes.