A Level Biology Triglycerides and phospholipids
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- Question 1 of 22
1. Question
Which lipids are made of one molecule of glycerol and three molecules of fatty acid?
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2. Question
What type of reaction occurs between glycerol and three molecules of fatty acid (RCOOH) to create a triglyceride?
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3. Question
In triglycerides, what type of bond forms between one molecule of glycerol and three molecules of fatty acid?
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4. Question
The R-group of a fatty acid may be saturated or unsaturated. What does unsaturated mean?
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5. Question
What describes triglycerides better?
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6. Question
What is the name of the functional group at the end of the chain in fatty acids?
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7. Question
If a single double bond is present in a fatty acid it is…?
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8. Question
Double bonds leading to bending of polyunsaturated triglycerides make them more likely occupy what state at room temperature?
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9. Question
Which property makes triglycerides an excellent source of energy?
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10. Question
Which property makes triglycerides an excellent source of energy?
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11. Question
In phospholipids, one of the fatty acids of a triglyceride is substituted by what?
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12. Question
Which part of the phospholipid is hydrophobic?
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13. Question
Which part of the phospholipid orientates itself away from water?
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14. Question
The hydrophobic ‘tail’ of phospholipids consists of…?
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15. Question
Which part of the phospholipid is hydrophilic?
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16. Question
Why are fatty acids said to be ‘polar’ molecules?
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17. Question
Owing to their polarity, in aqueous environments phospholipids form what structure important for formation of a cell?
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18. Question
Which of the following does not describe a property of a phospholipid bilayer?
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19. Question
By combining with carbohydrates within the cell-surface membrane, phospholipids form what type of molecules?
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20. Question
Glycolipids have important functions in which process?
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21. Question
What is the appropriate scientific term to describe ‘water-loving’?
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22. Question
What is the appropriate scientific term to describe ‘water-hating’?
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