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Microscopes

Microscopes. Field of View. Fly’s Foot. Surface of an Erasable Programmable Read-Only Memory Silicon microchip. Eyelash hairs growing from the surface of human skin. The surface of a strawberry. Bacteria on the surface of a human tongue. Human sperm (spermatozoa).

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Microscopes

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  1. Microscopes

  2. Field of View

  3. Fly’s Foot

  4. Surface of an Erasable Programmable Read-Only Memory Silicon microchip

  5. Eyelash hairs growing from the surface of human skin

  6. The surface of a strawberry

  7. Bacteria on the surface of a human tongue

  8. Human sperm (spermatozoa)

  9. Nylon hooks and loops of Velcro

  10. Household dust: includes long hairs of cat fur, twisted synthetic and woolen fibers, serrated insect scales, a pollen grain, and plant and insect remains

  11. The weave of nylon stocking fibers

  12. The head of a mosquito

  13. Head louse clinging to a human hair

  14. Eight eyes (two groups of four) on the head of a tarantula

  15. Cut human hairs and shaving foam between two razor blades

  16. Cigarette paper the tobacco is rolled in

  17. Corroded surface of a rusty nail

  18. Mushrooms spores

  19. Clutch of butterfly eggs on a raspberry plant

  20. Calcium phosphate crystal

  21. Spider Skin

  22. Starch in a corn kernel

  23. Intestinal Bacteria

  24. Paramecium

  25. Volvox

  26. Hooke

  27. Prokaryotes Link to Cell Size

  28. Eukaryotes

  29. FluidMoasicModel

  30. http://multimedia.mcb.harvard.edu/anim_innerlife.html

  31. Nucleus

  32. Nucleus • Contains the genes that control the cell; localizing the cell’s DNA • Nuclear envelope - separates the nucleus contents from cytoplasm - double membrane with pores to regulate what enters and exits nucleus

  33. Nucleus • Nucleolus – densely packed RNA and proteins that makes up ribosomes • Chromatin: threads of DNA that makes up the chromosomes and their associated proteins (histones)

  34. Endomembrane System • Membranes physically touch one another or transfer membrane segments through tiny vessicles • Includes: - Nuclear envelope - Endoplasmic reticulum - Golgi apparatus - Lysosomes - Peroxisomes - Cell membrane

  35. ER + Ribosomes

  36. Endoplasmic Reticulum • Membranous labryinth extending from the nuclear membrane • Made of tubes and sacs called cisternae

  37. Rough ER: ribosomes stud the cytoplasmic surface • Many types of specialized cells secrete proteins made by the rough ER which are moved in transport vesicles • As the polypeptide chain grows from the ribosomes, it goes into the ERs cisternal space and folds into higher levels • Some proteins (glycoproteins) are covalently bonded to carbohydrates or are embedded in newly synthesized lipid membranes

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