The energy-generating biochemical reactions that break down organic food molecules are what type of reactions?

Catabolic reactions.

Explanation:

Catabolic reactions like cellular respiration and digestion breaks down food materials (through hydrolysis) such as fats, carbohydrates and proteins to release energy in form of ATP and NADPH.

There are many different animal classes and every animal in the world belongs to one of them. The five most well known classes of vertebrates (animals with backbones) are mammals, birds, fish, reptiles, amphibians.

Explanation:

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