Exam 25: Lipids

Draw the two fatty acid structures that result from acid and base hydrolysis of a triacylglyceride and explain how they differ. (Use a core structure of 10 carbon atoms)

Why do most fatty acids contain an even number of carbons?

The C:H ratio present in most terpenes is ________.

Show the complete saponification of tristearin, including the reagents needed and the products of the reaction.

Which of the following lipids is an example of a simple lipid?

Define lipid.

Which of the following terms best describes the compound below? CH₃(CH₂)₄CH CHCH₂CH CH(CH₂)₇CO₂^-Na⁺

Draw the compound below in a stable chair conformation and indicate whether the circled group is axial or equitorial.

Is cholesterol an example of a simple lipid or a complex lipid? Explain briefly.

The sodium or potassium salt of a fatty acid is known as a ________.

Draw the structure of a micelle and label which part is hydrophobic and which is hydrophilic.

Describe the intermolecular interaction of the surface carboxylate groups of a micelle and the surrounding water.

β-carotene is a naturally occurring compound containing 40 carbon atoms which has a significant extended system of conjugated double bonds. This compound is also a terpene. How many isoprene units are present in

Given a single triglyceride which contains three identical and fully saturated fatty acid residues, which of the following terms accurately describe(s) it?

Prostaglandins are derived from ________.

When linoleic acid is hydrogenated, what organic compound is produced and how does its melting point compare to that of linoleic acid?

Phospholipids are generally produced from the phosphatidate core structure with a polar head modifying group such as choline. However, a phospholipid called sphingomyelin (see below) is found abundantly in brain and fast neurons. Circle and label all structural features of sphingomyelin which are different from lecithin.

Which of the following oils has the highest percentage of saturated fatty acid?

What are the two major organic products which result when oleic acid, is treated with ozone followed by dimethyl sulfide?

Which of the following terms best describes the compound below? CH₃(CH₂)₂₆CO₂CH₂(CH₂)₃₂CH₃