Bio Cell definitions

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Anonymous
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159286
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Bio Cell definitions
Updated:
2012-06-19 14:17:09
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Bio Unit
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Description:
Grade 10 Bio unit 2 review
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  1. a protective barrier for the cell: allows the transport of needed materials into the cell and waste materials out; is important for cell interaction and communication, and for recognition of molecules
    cell membrane
  2. the organelle that contains DNA, the genetic material of the cell, and directs all cellular activities.
    nucleus
  3. surrounds the nucleus, has pores to allow the transport of materials
    nuclear envelope 
  4.  a gel-like substance inside the cell membrane: contains the nutrients required by the cell to carry on the life processses. the organelles are suspended in the substance. allows for the movement of organelles and molecules within the cell
    cytoplasm
  5. Which has a cell wall?
    a) animal cells
    b) plant cells 
    b) plant cells
  6. a rigid frame around the cell that provides strength and support
    cell wall
  7. found only in plants and some protists. sites of photosynthesis, contain chlorophyll that produces a green color
    chloroplasts
  8. membrane-bound structures that serve to store nutrients, products of secretion, and fats, depending on the tissue type. un plants, it stores water for the cell and increases the turgor pressure, causing the cell to become firm or turgid.
    vacuole
  9. a series of interconnected small tubes that branch from the nuclear envelope. materials can be transported through these tubes.
    endoplasmic reticulum 
  10. has ribosomes attatched to it and is associated with protein synthesis
    rough endoplasmic reticulum
  11. associated with fat and oil production
    smooth endoplasmic reticulum
  12. all the cell organelles, except the _________ are enclosed by a membrane
    all the cell organelles, except the ribosomes are enclosed by a membrane
  13. dense looking granules formed of two parts. they may be attatched to the endoplasmic reticulum or free in the cytoplasm. the sites where amino acids are assembled into proteins in the process of protein synthesis
    ribosomes
  14. membrane-bound sacs in the cell in which digestion can go on. the various roles of these include defense against invading bacteria, destruction of damaged cell organelles, and controlled digestion of certain tissues during development.
    lysomes
  15. composed of flat, disc-shaped sacs involved in secretion. revieves substances from the endoplasmic reticulum and packages them for transport out of the cell.
    golgi apparatus
  16. rod-like structures where reactions occur to convert chemical energy in sugars into energy the cell can use. this process is called cellular respiration. 
    mitochondria

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