The mitochondria is responsible for breaking down sugar to produce energy.
I think that this question was asked by a bot made by brainly.
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Answer:
Complex Carbohydrates
Explanation:
There are different types of macromolecules and they all have different purposes, but for a marathon carbs, specifically, complex ones would be best. This is because carbs are the main source of energy for the body. Additionally, unlike proteins, they allow for long-term energy; so you could run an entire marathon without running out of energy.
What type of mutation has occurred in figure 12-3?
Answer= substitution
