Chem 336 - Spring 1999 - Organic Chemistry III
Portland State University - Dr. Carl C. Wamser

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Chapter 25 Pre-Quiz Answers

(1 point each)

1. The components of a triglyceride are fatty acids plus

a) steroids and alcohols

b) lipids

c) glycerol

d) phosphates and glycerides

2. In the fluid mosaic model of a membrane, the components include

a) proteins

b) lipids

c) carbohydrates

d) steroids

e) all of the above

3. Lecithin is an example of a

a) vitamin

b) steroid

c) triglyceride

d) phospholipid

e) prostaglandin

4. In steroid nomenclature, the prefix "nor" means

a) straight chain

b) having an extra alcohol group

c) having an extra methyl group

d) missing an alcohol group

e) missing a methyl group

5. Phospholipids can have different head group charges, depending on the substituents. At normal physiological pH values, phosphatidylserine would be expected to have

a) no charge at any position

b) only negative charge

c) only positive charge

d) both positive and negative charges