2.6.2 Saturated vs. Unsaturated Fats Flashcards

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1
Q

triglycerides

A
  • lipids that are made up of three fatty acids bonded to a glycerol molecule. The characteristics of a triglyceride depend on the fatty acids that are attached
  • Triglycerides with unsaturated fatty acids are more liquid at room temperature, while those with saturated fatty acids are more solid at room temperature.
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2
Q

saturated fatty acids

A
  • Fatty acids that have as many hydrogen atoms as possible on the carbon chain
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3
Q

unsaturated fatty acids

A
  • Fatty acids that have double bonds within the carbon chain (and therefore fewer hydrogen atoms)
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4
Q

Most animal fats

A
  • lack double bonds
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5
Q

Saturated fats are saturated with

A
  • hydrogen
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6
Q

What type of molecule (non-ring shaped) is indicated by the molecular formula, C9H15COOH?

A
  • an unsaturated fatty acid
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7
Q

Saturated fats are solid at room temperature because

A
  • the absence of carbon-carbon double bonds in the fatty acid tails allows the tails to fit more compactly together
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8
Q

Choose the correct answer for the following description: a molecule that contains double bonds between carbon atoms

a. saturated fatty acids
b. unsaturated fatty acids
c. neither saturated nor unsaturated fatty acids
d. both saturated nor unsaturated fatty acids

A
  • b. unsaturated fatty acids
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9
Q

What makes a fatty acid an acid?

A
  • the −COOH group
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10
Q

Which of the following statements regarding unsaturated fats is true?

a. Unsaturated fats contain carbon-carbon double bonds.
b. Unsaturated fats are liquid at room temperature.
c. Unsaturated fats have fewer hydrogens per carbon than a saturated fat with the same number of carbons.
d. all of the above

A
  • d. all of the above
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