science

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Across
  1. 2. ''power house''; energy to power the cell's activities,
  2. 6. A substance (made of sugars) that is common in the cell walls of many organisms
  3. 7. An organelle found in plant and algae cells where photo- synthesis occurs
  4. 9. substances that help build and maintain body cells and tissues
  5. 10. A simple sugar that is an important source of energy.
  6. 12. type of nutrient that is the major source of energy for the body
  7. 13. Process that releases energy by breaking down glucose and other food molecules in the presence of oxygen
Down
  1. 1. compound made up of carbon, hydrogen, and oxygen
  2. 3. A green pigment found in the chloroplasts of plants, algae, and some bacteria
  3. 4. a substance that provides nourishment essential for growth and the maintenance of life.
  4. 5. Plants use the sun's energy to convert water and carbon dioxide into sugars
  5. 8. Energy-rich organic compounds, such as fats, oils, and waxes, that are made of carbon, hydrogen, and oxygen
  6. 11. A type of protein that speeds up a chemical reaction in a living thing