Name:_______________
Date:_____________
1. The study of the chemistry of living things is called ___________.
2. The fuel part of food consists of ______, ________, ____, and _______.
3. Sugars and starches are broken down into a simple sugar called _______.
4. Glucose and oxygen combine to give cells energy through a process called ____ ___________.
5. Cells cannot use _______ directly to make energy. Instead, oxygen and glucose react to form the energy molecule _ _ _.
6. ATP is a molecule which reacts with _____ inside of cells to release ______.
7. One molecule of glucose results in the production of _ _ molecules of ATP. However, ___ molecules of ATP are used as energy to start the process of cell respiration. Therefore, one molecule of glucose results in a net production of _ _ ATPs.
8. Cell respiration is called _______ respiration when glucose breaks down in the presence of oxygen. When this occurs, a net of _ _ ATP molecules are formed and _____ _______ and _____ are given off as by-products.
9. If breathing cannot supply the oxygen needed for aerobic respiration, _________ respiration occurs.
10. _________ respiration is called fermentation.
11. In fermentation, glucose is broken down without the use of ______.
12. Fermentation is not as _________ as aerobic respiration.
13. Fermentation results in a net of _ ATP molecules, compared to the net of _ _ produced by aerobic respiration.
14. In fermentation, ______ _______ and _____ are not produced as by-products. Instead, ______ ____ is the by-product. It is ______ ____ that makes muscle cells ____ during anaerobic respiration.
15. Only _____ ______ and certain _____ ___-______ organisms can make food.
16. Food making organisms trap energy from ________ in a green substance called ___________.
17. The energy trapped in ___________ is used to make food in a process called ______________.
18. The energy in chlorophyll splits water into ________ and ______. The ________ is joined with carbon dioxide to form _______.
19. Plants use ______ for cell respiration which occurs in the presence of ______. However, all of the _______ is not used in cell respiration, so ______ is given off as a by-product. Animals like us breath this ______ to use in our own cell respiration.
20. The glucose made by green plants is then eaten by _______ and becomes ____ for energy.
21. _________ are animals that eat only plants.
22. __________ are animals that eat only other animals.
23. __________ are animals that eat both plants and animals.
24. Most people are __________.
25. Ultimately, all food comes from _____, & all energy from the___