Lesson 2: Lipids Flashcards
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
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
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
Essential fatty acids are unsaturated fatty acids that cannot be synthesised in animal cells. True or False?
True
Fatty acids with no double bonds are called
Select one:
a. Monounsaturated
b. Triglycerides
c. Saturated
d. Polyunsaturated
e. Peptides
c. Saturated
Lecithin is a
Select one:
a. Steroid
b. Leukotriene
c. Triglyceride
d. Phospholipid
e. Thromboxane
d. Phospholipid
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
Most naturally occurring unsaturated fatty acids are of the trans configuration. True or False?
False
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
The lipid bilayer should be rigid to allow for the effective transport of substances in and out of the cell. True or False?
False
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
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
Unsaturated fatty acids have kinks in their structure due to the rigidity of the double bond. True or False?
True
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
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
