The Cell Lecture 4

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  • Created by: saraht83
  • Created on: 29-04-16 10:56

1. What is diffusion rate determined by?

  • temperature, size, charge and concentration gradient
  • transmembrane proteins, size, charge and concentration gradient
  • temperature, saturation, charge and concentration gradient
  • temperature, size, charge and cytoplasmic fibres
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2. What model describes the plasma membrane?

  • fluid mosaic model
  • fluid phospholipid model
  • phospholipid trilayer model
  • fluid bilayer model

3. What do tight junctions do?

  • link adjacent epithelial cells, restrict protein migration, prevent substances moving through intercellular space
  • link adjacent muscle cells, restrict protein synthesis, prevent substances moving through intercellular space
  • link adjacent endothelium cells, restrict protein migration, prevent protein synthesis
  • link adjacent muscle cells, restrict protein migration, prevent substances moving through intercellular space

4. What are thylakoid membranes involved in?

  • conversion of light energy in photosynthesis
  • conversion of chemical energy in photosynthesis
  • conversion of heat energy in photosynthesis
  • conversion of mechanical energy in photosynthesis

5. What is secondary active transport?

  • uses established gradients and uses ATP indirectly
  • uses established gradients and uses ADP directly
  • uses established gradients and uses ATP directly
  • uses established gradients and uses ADP indirectly

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