Biology I

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Across
  1. 4. bacteria
  2. 9. membrane bound sacs formed from other membranes
  3. 13. whip-like appendages on the cell membrane
  4. 14. life
  5. 15. passive movement of a substance down a concentration gradient and across a membrane that requires a carrier protein (2 words)
  6. 16. DNA in long, loose fibers
  7. 18. foot
  8. 19. digits
  9. 23. cells that receive and transmit signals (2 words)
  10. 24. a method of classifying organisms based upon their evolutionary relationships
  11. 25. bone
Down
  1. 1. flesh
  2. 2. flat
  3. 3. sheets of cells that cover or line other tissues (2 words)
  4. 5. passive movement of water through a semi-permeable membrane from the dilute solution to more concentrated solution
  5. 6. finger-like projections formed from the cell membrane
  6. 7. algae and protozoans
  7. 8. cell eating of large particles
  8. 10. movement of fluids or particles out of the cell
  9. 11. rabbit
  10. 12. the site of protein synthesis
  11. 13. the joining of the ovum and spermatozoon
  12. 17. single set of chromosomes found in the gametes
  13. 20. membrane bound sacs that contain hydrolytic enzymes
  14. 21. the scientific study of living organisms
  15. 22. worm