Lesson 2: Lipids Flashcards Preview

Biochemistry Final Exam > Lesson 2: Lipids > Flashcards

Flashcards in Lesson 2: Lipids Deck (15):
1

A steroid derivative made in the body is

Select one:
a. Testosterone
b. Cortisone
c. Aldosterone
d. Bile acids
e. All of these answers are correct

e. All of these answers are correct

2

Cerebrosides are characterised by the linking of ceramide to

Select one:
a. A monosaccharide
b. An oligosaccharide
c. A disaccharide
d. A polysaccharide
e. A fatty acid

A monosaccharide

3

Chylomicrons

Select one:
a. Are the basic building blocks of lipids
b. Carry cholesterol to the cells
c. Transport cholesterol from the peripheral tissues to the liver
d. Carry dietary lipids from the intestine to the cells
e. Transport triglycerides that have been synthesised in the liver

d. Carry dietary lipids from the intestine to the cells

4

Essential fatty acids are unsaturated fatty acids that cannot be synthesised in animal cells. True or False?

True

5

Fatty acids with no double bonds are called

Select one:
a. Monounsaturated
b. Triglycerides
c. Saturated
d. Polyunsaturated
e. Peptides

c. Saturated

6

Lecithin is a

Select one:
a. Steroid
b. Leukotriene
c. Triglyceride
d. Phospholipid
e. Thromboxane

d. Phospholipid

7

Lipids perform a variety of functional roles in humans including

Select one:
a. Movement
b. Regulation of gene expression
c. Cell membranes
d. Catalysis
e. Antibodies

c. Cell membranes

8

Most naturally occurring unsaturated fatty acids are of the trans configuration. True or False?

False

9

Saturated fatty acids are

Select one:
a. All of these answers are correct
b. Easily stacked together due to the regular nature of their hydrocarbon chains
c. Reasonably stable when heated
d. Usually solids at room temperature
e. Mostly from animal fats

a. All of these answers are correct

10

The lipid bilayer should be rigid to allow for the effective transport of substances in and out of the cell. True or False?

False

11

The polar head groups of the phospholipid are on the outside of the lipid bilayer, in contact with the aqueous internal or external cell environment. True or False?

True

12

Trigycerides are made up of

Select one:
a. Phosphate, an alcohol, and two fatty acids
b. Three glycerol side chains joined to one fatty acid
c. An amino group and a carboxyl group
d. Three fatty acids joined to a glycerol side chain
e. Two fatty acids joined to a glycerol side chain

d. Three fatty acids joined to a glycerol side chain

13

Unsaturated fatty acids have kinks in their structure due to the rigidity of the double bond. True or False?

True

14

What does the ‘3’ in omega-3 refer to?

Select one:
a. The number of carbon atoms
b. The placement of the first double bond
c. The number of fatty acids
d. The placement of the ketone group
e. The number of double bonds

b. The placement of the first double bond

15

Which of the following is INCORRECT in relation to cholesterol?

Select one:
a. Nearly all tissues in the body are capable of synthesizing cholesterol
b. Dietary intake accounts for the majority of the cholesterol in the body
c. It is used for the production of vitamin D in the body
d. It is a nonpolar molecule
e. It is the basis for steroid derivatives such as estradiol

b. Dietary intake accounts for the majority of the cholesterol in the body