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10 Cards in this Set
- Front
- Back
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The “hard” clot has covalent bonds formed between the proteins in the clot |
True |
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Cellulose is composed of glucose units joined in alpha 1,4 glycosidic bonds |
False, Beta not alpha |
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Lipids with sugars attached are often found on the exterior surface of the cell membrane |
True |
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The interior of the lipid bilayer is more hydrophilic than the exterior |
False, less |
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RNA is more polar than DNA |
True |
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DNA contains the sugar 3-deoxyribose |
False, 2 |
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RNA contains uracil |
True |
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Triglycerides are more hydrophilic than phospholipids |
False, more hydrophobic |
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Gangliosides are lipids that also contain complex sugars |
True |
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At pH 7, tryptophan crosses a lipid bilayer at about one-thousandth the rate of indole. Why? |
At pH 7, tryptophan exists as a zwitter ion which means it has equal positive and negative ions. The indole group remains unchanged and movement is favorable |
