cells and microscopes

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Across
  1. 10. -magnifying lenses to examine small objects
  2. 12. - the death of cells which occurs as a normal and controlled part of an organism's growth or development.
  3. 13. - is a scientific theory which describes the properties of cells.
  4. 14. - building blocks of life
  5. 15. - a form of active transport in which a cell transports molecules
  6. 18. No. units in 1 m is 1,000,000
  7. 19. - the process by which plants
  8. 21. - surrounds the cell, controlling what goes into and out of the cell.
  9. 23. - s a part of the cell cycle in which chromosomes in a cell nucleus
  10. 24. a cell
  11. 25. - jelly- like fluid to hold all the organelles in place
Down
  1. 1. - exist at or from an earlier time.
  2. 2. have 3 or more lenses to choose from
  3. 3. the power labelled on it is x10
  4. 4. -often referred to as the 'control centre'
  5. 5. - only in plant cells
  6. 6. - a space or vesicle within the cytoplasm of a cell,
  7. 7. - invented the micrscope
  8. 8. -uses a lens close to the object being viewed to collect light
  9. 9. the scientist who came up with the term the cell.
  10. 11. - is a unit of spatial measurement that is 10-9 meter
  11. 16. - in the microscope to see the object
  12. 17. a plastid in green plant cells which contains chlorophyll and in which photosynthesis takes place.
  13. 18. - found in large numbers in most cells
  14. 20. cell- a neuron.
  15. 22. - in the human body
  16. 26. - in the microscope ,Allows you to direct ambient light up through the hole