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Home Q & A Board Biology-Related Homework Help General Biology
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Jade.Lee Jade.Lee
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6 years ago
Transport proteins _____.
 
  a. are found only in eukaryotic cells
  b. allow only small molecules and ions to cross the membrane
  c. are required for small nonpolar molecules to cross the membrane
  d. allow ions and polar molecules to cross the membrane
  e. are peripheral membrane proteins

Question 2

The relative impermeability of membranes to water soluble molecules is a result of the ____.
 
  a. nonpolar nature of water
  b. presence of large proteins that extend through both sides of membranes
  c. presence of inorganic salt crystals scattered through some membranes
  d. presence of cellulose and waxes
  e. presence of phospholipids in the lipid bilayer
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thatguythatguy
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6 years ago
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Jade.Lee Author
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6 years ago
You make an excellent tutor!
patyfeitosa
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Yesterday
this is exactly what I needed
jaray75
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2 hours ago
Smart ... Thanks!
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