ABC's of Biology

1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950
Across
  1. 1. Chemicals that have been used in home appliances, like air conditioners, which destroy the ozone layer.
  2. 3. A transfer of molecules across a membrane. It requires energy
  3. 5. Nonliving
  4. 6. A process, reaction, or organism requiring the absence of oxygen.
  5. 8. The process of water changing from a gas to a liquid in cool air.
  6. 9. The processes by which carbon cycles through Earth's living and nonliving systems.
  7. 11. The process of changing chemicals into chemical energy, or sugars.
  8. 12. A compound that releases hydroxide in water.
  9. 13. A green substance in the thylakoid membranes of chloroplasts that gathers light for photosynthesis.
  10. 15. A protein in the thylakoid membrane that produces ATP.
  11. 16. The process of fertilization.
  12. 17. To examine or interpret.
  13. 19. A molecule made from pyruvate that is used in the Krebs cycle.
  14. 21. A chemical substance that causes a solution to resist changes in acidity by binding to or releasing hydrogen ions.
  15. 23. A water-based fluid surrounding all the structures inside a cell.
  16. 26. A group of microscopic single-celled organisms.
  17. 27. The smallest unit of an element, one of the fundamental kinds of matter. It is made up of protons, neutrons, and electrons.
  18. 28. Rainwater that has a higher acidity than natural rainwater as a result of mixing with air pollutants, especially those released by the burning of fossil fuels
  19. 30. The process in which ethanol and carbon dioxide are produced as waste products.
  20. 33. A process that results in substances forming or breaking into new substances.
  21. 34. The breakdown of food molecules in the presence of oxygen in order to release chemical energy in the form of ATP.
  22. 36. The careful management of a resource, such as water or wildlife, in order to replenish it or protect it from being lost.
  23. 39. The scientific idea that all living things are made of cells, cells are the basic units of life, and all cells come from preexisting cells.
  24. 41. A group of about 100 cells, of two types, that form from a fertilized egg.
  25. 43. A strong attractive force between atoms that holds them together. The attractive force comes from sharing or transferring their outermost (valence) electrons.
  26. 44. A symbiotic relationship between organisms of different species in which one organism is helped while the other is neither helped nor harmed.
  27. 45. The energy stored in a chemical bond (or the bond energy).
  28. 47. The collection of organic matter in an area.
  29. 48. A type of tissue in the body that provides support and protection, fills spaces, stores fat, produces blood cells, and helps to repair damage.
  30. 50. A double layer of phospholipids with proteins that surrounds the cell and controls the movement of materials to and from its outer environment.
Down
  1. 1. The entire contents of a living cell, except for the nucleus and large vacuoles.
  2. 2. Any organic molecule that contains only carbon, hydrogen, and oxygen.
  3. 4. A compound that transfers hydrogen ions to water.
  4. 7. A group in an experiment that is not exposed to the factor or condition being tested.
  5. 9. The amount of matter in a given space or volume.
  6. 10. The number and variety of living organisms in an ecosystem or geographic area.
  7. 11. A type of bond between atoms that involves the sharing of electrons.
  8. 14. A measure of how much carbon dioxide a person releases into the air by his or her daily activities.
  9. 18. A process, reaction, or organism requiring the presence of oxygen
  10. 20. The most basic unit of life. All cells are bound by a membrane and contain biomolecules such as nucleic acids and proteins.
  11. 22. Also known as light-independent (dark) reactions, a set of chemical reactions that occur in the stroma of chloroplasts during photosynthesis.
  12. 23. The folded parts of the inner membrane in mitochondria.
  13. 24. how close a measurement comes to the true value
  14. 25. The act of tightening in the process of movement.
  15. 29. An organism that obtains its energy by eating other organisms.
  16. 31. Short for adenosine triphosphate; the energy molecule of a cell.
  17. 32. A type of experimental design in which a hypothesis is tested under carefully controlled conditions, and the control group is compared with the experimental group.
  18. 35. A small, organic molecule that links with other amino acids in long chains to form proteins. It contains an amino group, a carboxylic acid group, and a side chain.
  19. 36. The structure on the inside of a cell, made of fibrous proteins.
  20. 37. A type of organism that produces food which is eaten by other organisms, but does not need to eat food to obtain energy and matter.
  21. 38. Large bodies of air or water flowing in a certain direction.
  22. 40. A double layer of molecules in which the polar end of the molecules faces outward from the layers, and the nonpolar end faces inward.
  23. 42. A double-membrane organelle in plant and some protist cells that is the main site of photosynthesis.
  24. 44. A preparation of living cells (bacteria, plant, animal) maintained under conditions (temperature, food, water, oxygen) suitable for growth.
  25. 45. A substance that makes chemical reactions occur more quickly without getting used up as a reactant.
  26. 46. An organism that obtains its energy and matter by eating animals.
  27. 49. A stiff structure made of complex sugars that surrounds plant, fungi, algae, and some bacteria cells in order to provide support.