Across
- 4. type of organism that uses light energy or chemical energy to make food for itself and other organisms
- 6. basic unit of structure and function of living things
- 8. organic molecules, such as glucose, that organisms use for chemical energy
- 12. diagram that represents a single pathway through which energy and matter flow through an ecosystem
- 13. organic compound that supplies energy to the body, such as sugar and starch
- 15. a representation of a chemical reaction that displays the reactants and products with chemical formulas; multiple reactants or products are separated with a plus sign, and reactants are separated from the products with a yield arrow
- 17. eukaryotic organism in the protist kingdom
- 21. carbon-containing molecules, such as carbohydrates, lipids, proteins, and nucleic acids that form the basis of life
- 23. an individual living thing
- 24. process of breaking down and using the energy in chemical compounds to make food
- 25. energy-carrying molecule that cells use to power their metabolic processes; provides the cell with an immediate usable form of energy
- 26. organism that gets food by consuming other organisms
- 27. single-celled prokaryotic organism that is a member of the Bacteria domain
Down
- 1. process in which cells use carbon dioxide, water, and light energy to make oxygen and glucose, an energy-storing sugar
- 2. common name of a plant-like protist, which contains chloroplasts and makes food by photosynthesis
- 3. exchange of oxygen and carbon dioxide between the body and the outside air
- 5. sharing of electrons between two atoms that holds the atoms togethe
- 7. mixture of gases that surrounds a planet such as Earth
- 9. the ability to do work
- 10. large, complex carbohydrate found in foods such as grains and vegetables that the body uses for energy
- 11. substance that is present at the start of a chemical reaction
- 14. a biochemical process in which cells break down glucose and oxygen to make carbon dioxide, water, and ATP for energy
- 15. process that occurs when one or more substances, called reactants, is changed into one or more new substances, called products
- 16. all the living things in a given area together with the physical and chemical factors of the nonliving environment
- 18. simple sugar that all living things use to store and transport energy
- 19. eukaryotic organism in the fungus kingdom, includes mushrooms and yeast
- 20. type of organism that obtains food by breaking down the remains of dead organisms or other organic wastes into its various components, including nutrients that can be used by other organisms
- 22. organism that makes its own food
- 28. multicellular, heterotrophic eukaryote with specialized cells that lack cell walls; member of the animal kingdom