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Type: Multiple-Choice
Category: Respiration, Digestion, and Excretion
Level: Grade 7
Author: kdfar
Last Modified: 17 days ago

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Respiration, Digestion, and Excretion Question

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Grade 7 Respiration, Digestion, and Excretion

What is chemical digestion?
  1. physical breakdown of food through chewing and churning, making digestion easier
  2. organism’s ability to keep the proper conditions inside no matter what is going on outside of the organism
  3. breakdown of food through compounds such as acids and enzymes, making it possible for the body to absorb nutrients
  4. process that releases energy by breaking down glucose and other food molecules in the presence of oxygen
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