Metabolism Vocabulary

6. Organ where nutrients from digested food are absorbed into the body; it is lined with tiny villi for better absorption.
7. This body system breaks down the large molecules in food into smaller molecules that can be absorbed by cells.
11. This molecule is small enough to be absorbed by cells, and is what you get when starch is digested.
12. We breathe in this essential molecule that likes to travel in pairs (O₂).
13. This molecule is too large to be absorbed by cells, so it is digested into individual amino acid molecules for absorption.
14. This structure inside the small intestine helps our bodies tiny nutrient molecules. The structure looks like tiny fingers with capillaries throughout so nutrients can be transported directly into cells.
17. This waste gas leaves cells and is carried to the alveoli through capillaries, and finally exhaled from the lungs.
18. Organ is where H₂O from digested food is absorbed into the body.
19. This structure inside the lungs helps our bodies exchange CO₂ for O₂. It looks like a cluster of grapes and has capillaries throughout so gases can be transported to and from cells through blood.

1. This body system transports nutrients and gases all over the body, to and from each body cell.
2. All cells have this special “skin” that allows molecules to pass in and out of the cell. It is “selectively permeable” - meaning that it “selects” which molecules permeate (pass through).
3. This molecule is small enough to be absorbed by cells, and is what you get when protein is digested.
4. chemical reaction in which glucose and oxygen react to form oxygen and water, releasing energy for the cell in the process.
5. The smallest unit of living things.
8. The chemical processes that occur within a living organism in order to maintain life.
9. This organ includes the alveoli.
10. This body system allows gas exchange (oxygen in, and carbon dioxide out).
15. This molecule is too large to be absorbed by cells, so it is digested into smaller glucose molecules for absorption..
16. site of cellular respiration in cells.