Question 1

The products of the saponification of a fat are

Accepted Answer

A) the esters of fatty acids. 
B) fatty acids and glycerol. 
C) salts of fatty acids. 
D) salts of fatty acids and glycerol. 
E) phospholipids. 
A) the esters of fatty acids. 
B) fatty acids and glycerol. 
C) salts of fatty acids. 
D) salts of fatty acids and glycerol. 
E) phospholipids.

Question 2

For the question(s) that follow, identify the class of lipid to which each of the following molecules belongs.
-

Accepted Answer

A) glycerophospholipid 
B) triacylglycerol 
C) glycosphingolipid 
D) steroid 
E) wax 
A) glycerophospholipid 
B) triacylglycerol 
C) glycosphingolipid 
D) steroid 
E) wax

Question 3

Waxes are lipids derived from

Accepted Answer

A) a long-chain alcohol and a long-chain fatty acid. 
B) glycerol and three fatty acids. 
C) glycerol, fatty acids, phosphate, and an amino alcohol. 
D) sphingosine, fatty acids, phosphate, and an amino alcohol. 
E) terpenes and steroids. 
A) a long-chain alcohol and a long-chain fatty acid. 
B) glycerol and three fatty acids. 
C) glycerol, fatty acids, phosphate, and an amino alcohol. 
D) sphingosine, fatty acids, phosphate, and an amino alcohol. 
E) terpenes and steroids.

Question 4

In the fluid-mosaic model of cell membranes, the lipid molecules are oriented with their heads to the outside of the membrane.

Accepted Answer

A) True 
 B)False

Question 5

The steroid hormone present in birth control pills is

Accepted Answer

A) aldosterone. 
B) progesterone. 
C) cortisone. 
D) estrogen. 
E) norethindrone. 
A) aldosterone. 
B) progesterone. 
C) cortisone. 
D) estrogen. 
E) norethindrone.

Question 6

The products of the acid catalyzed hydrolysis of a fat are

Accepted Answer

A) the esters of fatty acids. 
B) fatty acids and glycerol. 
C) salts of fatty acids. 
D) salts of fatty acids and glycerol. 
E) phospholipids. 
A) the esters of fatty acids. 
B) fatty acids and glycerol. 
C) salts of fatty acids. 
D) salts of fatty acids and glycerol. 
E) phospholipids.

Question 7

Which of the following is NOT a lipoprotein that carries nonpolar lipids through the bloodstream?

Accepted Answer

A) sphingosine 
B) LDL 
C) HDL 
D) VLDL 
E) chylomicron 
A) sphingosine 
B) LDL 
C) HDL 
D) VLDL 
E) chylomicron

Question 8

Steroids do not contain fatty acids.

Accepted Answer

A) True 
 B)False

Question 9

Which of the following is a lipid?

Accepted Answer

A) cholesterol 
B) nicotine 
C) aniline 
D) lactose 
E) collagen 
A) cholesterol 
B) nicotine 
C) aniline 
D) lactose 
E) collagen

Question 10

In this diagram of a cell membrane, the object labeled (B) is a

Accepted Answer

A) steroid. 
B) hydrophobic region. 
C) membrane protein. 
D) glycerophospholipid bilayer. 
E) carbohydrate side chain. 
A) steroid. 
B) hydrophobic region. 
C) membrane protein. 
D) glycerophospholipid bilayer. 
E) carbohydrate side chain.

Question 11

A polyunsaturated fatty acid contains more than one

Accepted Answer

A) carboxyl group. 
B) hydroxyl group. 
C) carbonyl group. 
D) long carbon chain. 
E) double bond. 
A) carboxyl group. 
B) hydroxyl group. 
C) carbonyl group. 
D) long carbon chain. 
E) double bond.

Question 12

One function of phospholipids is to provide structure to biomembranes.

Accepted Answer

A) True 
 B)False

Question 13

For the question(s) that follow, identify the class of lipid to which each of the following molecules belongs.
-

Accepted Answer

A) steroid 
B) glycerophospholipid 
C) wax 
D) bile salt 
E) prostaglandin 
A) steroid 
B) glycerophospholipid 
C) wax 
D) bile salt 
E) prostaglandin

Question 14

The saponification of a fat gives fatty acid salts and glycerol.

Accepted Answer

A) True 
 B)False

Question 15

One inner component of a typical cell membrane is

Accepted Answer

A) glucose. 
B) cholesterol. 
C) glycine. 
D) palmitic acid. 
E) glycerol. 
A) glucose. 
B) cholesterol. 
C) glycine. 
D) palmitic acid. 
E) glycerol.

Question 16

In this diagram of a cell membrane, the small branched object labeled (A) is part of a

Accepted Answer

A) steroid. 
B) hydrophobic region. 
C) membrane protein. 
D) glycerophospholipid. 
E) carbohydrate side chain. 
A) steroid. 
B) hydrophobic region. 
C) membrane protein. 
D) glycerophospholipid. 
E) carbohydrate side chain.

Question 17

A triacylglycerol that is solid at room temperature is called a(n)

Accepted Answer

A) cephalin. 
B) lecithin. 
C) oil. 
D) wax. 
E) fat. 
A) cephalin. 
B) lecithin. 
C) oil. 
D) wax. 
E) fat.

Question 18

Compared to saturated fatty acids, unsaturated fatty acids have

Accepted Answer

A) longer carbon chains. 
B) shorter carbon chains. 
C) higher melting points. 
D) lower melting points. 
E) greater intermolecular attraction. 
A) longer carbon chains. 
B) shorter carbon chains. 
C) higher melting points. 
D) lower melting points. 
E) greater intermolecular attraction.

Question 19

Stearic acid is a polyunsaturated fatty acid.

Accepted Answer

A) True 
 B)False

Question 20

Many sex hormones are steroids.

Accepted Answer

A) True 
 B)False

Exam 17: Lipids

The products of the saponification of a fat are

For the question(s) that follow, identify the class of lipid to which each of the following molecules belongs. -

Waxes are lipids derived from

In the fluid-mosaic model of cell membranes, the lipid molecules are oriented with their heads to the outside of the membrane.

The steroid hormone present in birth control pills is

The products of the acid catalyzed hydrolysis of a fat are

Which of the following is NOT a lipoprotein that carries nonpolar lipids through the bloodstream?

Steroids do not contain fatty acids.

Which of the following is a lipid?

In this diagram of a cell membrane, the object labeled (B) is a

A polyunsaturated fatty acid contains more than one

One function of phospholipids is to provide structure to biomembranes.

For the question(s) that follow, identify the class of lipid to which each of the following molecules belongs. -

The saponification of a fat gives fatty acid salts and glycerol.

One inner component of a typical cell membrane is

In this diagram of a cell membrane, the small branched object labeled (A) is part of a

A triacylglycerol that is solid at room temperature is called a(n)

Compared to saturated fatty acids, unsaturated fatty acids have

Stearic acid is a polyunsaturated fatty acid.

Many sex hormones are steroids.

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