Biology Semester 1

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Across
  1. 1. CAPACITY The maximum population size of a species that an environment can sustain indefinitely
  2. 6. Relating to organisms or processes that require oxygen to occur
  3. 7. A community of living organisms interacting with each other and their physical environment
  4. 10. The jelly-like substance that fills the inside of a cell and surrounds the organelles
  5. 11. TRANSPORT The movement of substances across a cell membrane without the use of energy
  6. 12. A close and long-term interaction between two different biological species
  7. 15. The organelle that contains the cell's genetic material and controls cellular activities
  8. 17. RESPIRATION The process by which cells break down glucose and other molecules to release energy
  9. 21. An organism that can produce its own food using light water carbon dioxide or other chemicals
  10. 22. An organelle found in plant cells where photosynthesis occurs
  11. 23. TRANSPORT The movement of substances across a cell membrane requiring energy often against a concentration gradient
  12. 25. The process by which plants and other organisms convert light energy into chemical energy
  13. 26. Describes living factors in the environment such as plants animals and bacteria
  14. 28. The movement of particles from an area of high concentration to an area of low concentration
  15. 29. A protein that speeds up chemical reactions in the body by lowering activation energy
Down
  1. 2. The first stage of cellular respiration where glucose is broken down in the cytoplasm
  2. 3. Relating to organisms or processes that occur in the absence of oxygen
  3. 4. A small organelle involved in protein synthesis found floating in cytoplasm or attached to the ER
  4. 5. The diffusion of water molecules across a semipermeable membrane
  5. 8. A macromolecule made of sugars that serves as a primary source of energy for cells
  6. 9. The organelle known as the powerhouse of the cell where energy generation takes place
  7. 13. Describes non-living factors in the environment such as temperature water and sunlight
  8. 14. The process by which biological systems maintain stability while adjusting to changing external conditions
  9. 16. A complex molecule made of amino acids that performs many functions including structure and enzyme activity
  10. 18. A macromolecule that includes fats oils and waxes used for long-term energy storage
  11. 19. Small pores on the surface of leaves that allow for gas exchange
  12. 20. MEMBRANE The thin flexible barrier that surrounds all cells and regulates what enters and leaves
  13. 23. The primary energy carrier molecule used by living organisms to fuel cellular processes
  14. 24. A green pigment responsible for the absorption of light to provide energy for photosynthesis
  15. 27. ACID A macromolecule such as DNA or RNA that carries genetic information