2.6.2 Saturated vs. Unsaturated Fats

Question 1

triglycerides

Answer 1

• 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.

Question 2

saturated fatty acids

Answer 2

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

Question 3

unsaturated fatty acids

Answer 3

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

Question 4

Most animal fats

Answer 4

• lack double bonds

Question 5

Saturated fats are saturated with

Answer 5

• hydrogen

Question 6

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

Answer 6

• an unsaturated fatty acid

Question 7

Saturated fats are solid at room temperature because

Answer 7

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

Question 8

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

Answer 8

• b. unsaturated fatty acids

Question 9

What makes a fatty acid an acid?

Answer 9

• the −COOH group

Question 10

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

Answer 10

• d. all of the above