Chapter 7 Section 1 crossword

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Across
  1. 4. the latin word meaning small rooms
  2. 6. eukaryotic cells generally are one to ___ ______ times larger than prokaryotic cells.
  3. 10. a type of microscope that involves bringing the charged tip of theprobe extremely close to the specimen so that the electrons tunnel through the small gap between the specimen and the tip.
  4. 12. cells that contain a nucleus and other organelles that are bound by membranes.
  5. 13. energy
  6. 14. Some unicellular organisms, such as yeast, are also known as ______.
  7. 15. the basic structual and functional unit of all living organisms
  8. 16. Lynn Margulis proposed the idea that some organelles found in eukaryotes were once ____ _____ prokaryotes.
  9. 17. a special boundary that helps control what enters and leaves the cell membrane
  10. 19. cells without a nucleus or other membrane-bound organelles.
  11. 22. Cells are the basic unit of structure and ______ of all living organisms
  12. 23. Unlike the TEM and SEM microscopes, the ____ microscope can be used with live specimens.
  13. 24. one of the fundamental ideas of modern biology and includes three principles
  14. 25. Developments in this type of technology have given scientists the ability to study cells in greater detail.
Down
  1. 1. Instead of lenses the electron microscope uses this to aim a beam of electrons at thin slices of cells.
  2. 2. Cells break down _______ to
  3. 3. german scientist that reported that animal tissues also consisted of individual cells
  4. 5. Dutch scientist that designed his own microscope after he was inspired by a book written by Robert Hooke
  5. 7. A microscope that is one modification that directs electrons over the surface of the specimen, producing a three-dimensional image
  6. 8. English scientist that made a simple microscope and looked at a piece of cork, the dead cells of oak bark.
  7. 9. Robert Koch and ____ _____ pioneered the study of bacteria, using compound microscopes.
  8. 11. a distinct central organelle that contains the cell genetic materials in the farm of DNA nucleus.
  9. 18. The _______ theory that a symbolic relationship involves 1 prokaryotic cell living inside of another and both cells benefit from the relationship.
  10. 19. Matthius Schleiden carefully studied this to help him conclude that all plants are composed of cells
  11. 20. a type of microscope that measures various forces between the tip of a probe and the cell surface
  12. 21. Specialized structures that carry out specific cell functions.