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More cell review

More cell review. View living organisms under 1000 X? View surfaces, dead organisms 1000X -1,000,000X? View internal structures up to 1,000,000 X?. LM SEM TEM. Best Microscopes For?. 1._____Parfocal 2. ____Clarity 3..____Field Diameter 4.____Magnification. A. width of view

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More cell review

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  1. More cell review

  2. View living organisms under 1000 X? View surfaces, dead organisms 1000X -1,000,000X? View internal structures up to 1,000,000 X? LM SEM TEM Best Microscopes For?

  3. 1._____Parfocal 2. ____Clarity 3..____Field Diameter 4.____Magnification A. width of view B. stays in focus even if change objectives C. apparent increase in size D. resolving power; distinguish 2 different objects Matching:

  4. 1.__B_Parfocal 2. __D_Clarity 3..__A__Field Diameter 4.__C__Magnification A. width of view B. stays in focus even if change objectives C. apparent increase in size D. resolving power; distinguish 2 different objects Matching:

  5. 2 places to carry? Objective to first view? Where stage is to first view a slide? Arm and base Lowest (4X) Closest to objective Microscope How To’s:

  6. Total magnification? How does the field diameter change as the magnification gets larger? Multiply eyepiece by objective magnifications. DECREASES in the same proportion (EX: if the magnification is 10X’s greater, the diameter is 10X’s smaller) How do you find?

  7. How do you make a wet mount? • Tools? • Object on Slide • Eye dropper of water • Coverslip on top of water drop

  8. Put metric prefixes in order:from km to Å • Kids have dropped over dead converting metrics meeting nice angels • Km hm dkm m dm cm mm µm nm Å 3 3

  9. Convert: • 5 mm = _____µm = _____nm • 6 mm = ____________ nm • 55 nm = ___________ Å • 100 cm = ________mm = _______µm

  10. Convert: • 5mm = 5000µm = 5,000,000nm 6 mm = ____600,000__ nm • 55 nm = ___550___Å • 100 cm = __1000__mm =__100,000__µm

  11. What happens… • To the surface area to volume ratio when a cell gets larger? • The ratio decreases

  12. Cell sizes • Largest? • Ostrich egg • Smallest? • mycoplasmas

  13. PROKARYOTES Nucleoid Capsule Pili No membraned organelles EUKARYOTES Nucleus No capsule No pili Membraned organelles (like mitochondria, chloroplasts) Comparing

  14. What 2 structures do… • Plant cells have that animal cells do not? • Chloroplasts and cell walls

  15. What 2 structures… • Do animal cells have that plant cells do not? • Centrioles and cilia/flagella

  16. What type of organisms have? • Ribosomes? • All (prokaryotic, plant and animal) • Plasma membranes? • All (prokaryotic, plant and animal)

  17. DNA • Where would you find it in a cell? • In nucleus • How is chromatin related to DNA? • Chromatin is DNA + protein

  18. ER • How is Rough ER different from Smooth ER? • In structure? • Rough ER has ribosomes embedded in it, smooth ER does not • In function? • Rough ER carries materials to ribosomes to assemble amino acids into proteins, smooth ER makes lipids

  19. How do vacuoles differ? • In plants? • Large central vacuole • In animals? • Smaller (usually lysosomes around them)

  20. Put in order from largest to smallest in an animal cell: • Mitochondrion ribosomes nucleus lysosome vesicle • Nucleus • Mitochondrion • Lysosome • Vesicle • ribosome

  21. How are cilia and flagella different? • Length? • Cilia are shorter and flagella are longer • Number? • Cilia are very numerous and flagella usually only one or a few

  22. Golgi Apparatus Attached or not connected? Repackage proteins or carry materials? ER Attached or not connected? Repackage proteins or carry materials? How are they different?

  23. Golgi Apparatus not connected Repackage proteins ER Attached carry materials How are they different?

  24. In animal or plant cell? • Mitochondrion? • In Both animal and plant cells • Chloroplasts? • Only in plant cells

  25. In animal or plant cell? • Mitochondrion? • In Both animal and plant cells • Chloroplasts? • Only in plant cells

  26. Chloroplast or Mitochondrion? • Wavy membrane interior? • Mitochondrion • Green • Chloroplast • Site of photosynthesis • Chloroplast • Powerhouse • mitochondrion

  27. Trace the path of protein. Which happens first, second…? • A. Vesicles carry protein to Golgi. • B. Proteins are assembled in ER • C. Proteins are stored in the cell • D. Golgi repackages the proteins • ANSWER: B, A, D, C • See diagram on the next slide

  28. Path of Proteins

  29. Cytoskeleton • What are the three types of cytoskeleton? • Microtubules microfilaments centrioles • What is the purpose of centrioles? • Cell division • What are some jobs of microtubules? • Support, movement

  30. Which cell covering? • Is around all types of cells (prokaryotes and eukaryotes)? • Plasma membrane • Is around only plant and prokaryotes cells? • Cell wall • What covering is also outside the prokaryotic cell? • Capsule

  31. Cell Theory • What scientist made the first microscope? • Leewenhoek • Who first coined the word “cells?” • Hooke

  32. Cell Theory • Fill in the blanks: • All cells come from: • Pre-existing cells • The basic unit of life is a: • Cell

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