it14spr101.40cC3,5T1,2,3.txt

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it14spr101.40c
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it14spr101.40cC3,5T1,2,3.txt
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2014-02-07 15:35:25
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Chapter 3/5 Topics 1,2,3
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  1. Which organelle contains DNA and is enclosed by a double bi-layer nuclear envelope?
    Nucleus
  2. The contents of a cell, excluding the nucleus, is referred to as _______.
    Cytoplasm
  3. What is the selectively permeable outer boundary of a cell?
    Cell (Plasma) Membrane
  4. The _______ is the structural and functional unit of an organism.
    Cell
  5. The structures within a cell that house biochemical reactions that carry out specific functions are _______.
    Organelles
  6. What is the fluid portion of cytoplasm?
    Cytosol
  7. A membrane that allows some types of molecules through but not others is ______________.
    Selectively Permeable
  8. What is the basic framework of the cell membrane?
    Bi-layer Phospholipid
  9. The water soluble “head” of a phospholipid is _______.
    Hydrophilic
  10. The water insoluble “tail” of a phospholipid is _______.
    Hydrophobic
  11. Which model describes how lipid “rafts” and protein components can within the cell membrane?
    Fluid Mosaic Model
  12. Proteins that penetrate into the phospholipid bi-layer are ______________.
    Integral Proteins
  13. Which protein passes completely through the phospholipid bilayer?
    Trans Membrane Protein
  14. Proteins which remain on the surface of the phospholipid bi-layer are ______________.
    Peripheral Proteins
  15. What type of molecules enable cells to stick to each other?
    Cell Adhesion Molecules (CAMs)
  16. Which type of proteins are openings or “pores” that remain open so that water and electrolytes can pass through?
    Channel Proteins
  17. _______ are channel proteins which open/close based upon certain circumstances.
    Gates
  18. Which gate opens when a certain chemical attaches to it?
    Ligand Gate
  19. A gate that opens when a certain voltage is reached is a ______________.
    Voltage Gate
  20. What type of gate opens when it is affected by heat, stretching, etc.?
    Mechanical Gate
  21. _______ are trans membrane proteins which bind to glucose and electrolytes to transfer them to the other side of the membrane.
    Carriers
  22. _______ catalyze chemical reactions.
    Enzymes
  23. Which proteins act as a cell’s “ID tag”?
    Cell Identification Markers

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