Question 1

Membranes lipids are primarily comprised of:

Accepted Answer

A)  phospholipids. 
B)  glycolipids. 
C)  cholesterol. 
D)  A and B. 
E)  A, B, and C. 
A)  phospholipids. 
B)  glycolipids. 
C)  cholesterol. 
D)  A and B. 
E)  A, B, and C.

Question 2

What are the two systems for naming the positions of the double bonds? Provide examples.

Accepted Answer

Two systems are used. One system refers

Question 3

Define the different chemical characteristics for these phospholipids: phosphatidylserine, phosphatidylcholine, and phosphatidylinositol.

Accepted Answer

See Figure for each

Question 4

A phosphatidate lipid (phosphatidic acid) has which of the following components?

Accepted Answer

A)  phosphate 
B)  glycerol 
C)  ester linkage 
D)  acyl chain 
E)  All of the above. 
A)  phosphate 
B)  glycerol 
C)  ester linkage 
D)  acyl chain 
E)  All of the above.

Question 5

Octadecatrienoic acid has how many double bonds?

Accepted Answer

A)  0 
B)  1 
C)  2 
D)  3 
E)  4 
A)  0 
B)  1 
C)  2 
D)  3 
E)  4

Question 6

What does the notation 18:2 for fatty acids imply?

Accepted Answer

In this fatty acid,

Question 7

Choose the correct answer from the list below. Not all of the answers will be used.
-Lipids which contain carbohydrates is/are ____________.

Accepted Answer

A) ether-linked lipid 
B) triacylglycerol 
C) sterol 
D) amphipathic 
E) 16 or 18
F)organic solvent
G)cholesterol
H)cystein
I)phospholipid
J)prokaryotes
K)glycolipid
L)20 or 24
M)spingosine
N)serine 
A) ether-linked lipid 
B) triacylglycerol 
C) sterol 
D) amphipathic 
E) 16 or 18
F)organic solvent
G)cholesterol
H)cystein
I)phospholipid
J)prokaryotes
K)glycolipid
L)20 or 24
M)spingosine
N)serine

Question 8

What are some molecules that form the polar head group of phospholipids? Provide several examples.

Accepted Answer

Examples of head gro

Question 9

Choose the correct answer from the list below. Not all of the answers will be used.
-____________: A type of lipid with two acyl chains, a glycerol backbone, and a polar head group.

Accepted Answer

A) ether-linked lipid 
B) triacylglycerol 
C) sterol 
D) amphipathic 
E) 16 or 18
F)organic solvent
G)cholesterol
H)cystein
I)phospholipid
J)prokaryotes
K)glycolipid
L)20 or 24
M)spingosine
N)serine 
A) ether-linked lipid 
B) triacylglycerol 
C) sterol 
D) amphipathic 
E) 16 or 18
F)organic solvent
G)cholesterol
H)cystein
I)phospholipid
J)prokaryotes
K)glycolipid
L)20 or 24
M)spingosine
N)serine

Question 10

The presence of double bonds in fatty acids limits tight packaging and the number of ________________ interactions.

Accepted Answer

The answer of The presence of double bonds in fatty...

Question 11

Choose the correct answer from the list below. Not all of the answers will be used.
-____________: The storage form of fatty acids.

Accepted Answer

A) ether-linked lipid 
B) triacylglycerol 
C) sterol 
D) amphipathic 
E) 16 or 18
F)organic solvent
G)cholesterol
H)cystein
I)phospholipid
J)prokaryotes
K)glycolipid
L)20 or 24
M)spingosine
N)serine 
A) ether-linked lipid 
B) triacylglycerol 
C) sterol 
D) amphipathic 
E) 16 or 18
F)organic solvent
G)cholesterol
H)cystein
I)phospholipid
J)prokaryotes
K)glycolipid
L)20 or 24
M)spingosine
N)serine

Question 12

Choose the correct answer from the list below. Not all of the answers will be used.
-In addition to phospholipids and glycolipids, ____________ is a major type of membrane lipid.

Accepted Answer

A) ether-linked lipid 
B) triacylglycerol 
C) sterol 
D) amphipathic 
E) 16 or 18
F)organic solvent
G)cholesterol
H)cystein
I)phospholipid
J)prokaryotes
K)glycolipid
L)20 or 24
M)spingosine
N)serine 
A) ether-linked lipid 
B) triacylglycerol 
C) sterol 
D) amphipathic 
E) 16 or 18
F)organic solvent
G)cholesterol
H)cystein
I)phospholipid
J)prokaryotes
K)glycolipid
L)20 or 24
M)spingosine
N)serine

Question 13

What is the difference between a sphingolipid and a glycerolipid?

Accepted Answer

A sphingolipid has an alcohol such as a

Question 14

Why might a protein be covalently attached to a lipid?

Accepted Answer

By attaching to a lipid, the protein is

Question 15

Choose the correct answer from the list below. Not all of the answers will be used.
-____________ is a flat polycylic molecule that is absent in prokaryotic membranes.

Accepted Answer

A) ether-linked lipid 
B) triacylglycerol 
C) sterol 
D) amphipathic 
E) 16 or 18
F)organic solvent
G)cholesterol
H)cystein
I)phospholipid
J)prokaryotes
K)glycolipid
L)20 or 24
M)spingosine
N)serine 
A) ether-linked lipid 
B) triacylglycerol 
C) sterol 
D) amphipathic 
E) 16 or 18
F)organic solvent
G)cholesterol
H)cystein
I)phospholipid
J)prokaryotes
K)glycolipid
L)20 or 24
M)spingosine
N)serine

Question 16

An w-3 fatty acid:

Accepted Answer

A)  has a methyl group at the carboxyl end of the fatty acid. 
B)  has a methyl group on the third carbon of the chain. 
C)  has a double bond on the third carbon in from the carboxyl group. 
D)  has a triple bond on the third carbon from the methyl end of the fatty acid. 
E)  None of the above. 
A)  has a methyl group at the carboxyl end of the fatty acid. 
B)  has a methyl group on the third carbon of the chain. 
C)  has a double bond on the third carbon in from the carboxyl group. 
D)  has a triple bond on the third carbon from the methyl end of the fatty acid. 
E)  None of the above.

Question 17

Based on your knowledge of lipids, explain why some fats from plants are oils (liquid at room temperature) and animal fats are solid at room temperature.

Accepted Answer

Knowing that the longer the fatty acid c

Question 18

How does the structure of cholesterol give it a unique structural quality among the lipids?

Accepted Answer

The flat double-bonded fused r

Question 19

Draw and label a typical phospholipid.

Accepted Answer

The phospholipid drawn should resemble F

Question 20

Choose the correct answer from the list below. Not all of the answers will be used.
-____________: A term applied to molecules that have both hydrophilic and hydrophobic moieties.

Accepted Answer

A) ether-linked lipid 
B) triacylglycerol 
C) sterol 
D) amphipathic 
E) 16 or 18
F)organic solvent
G)cholesterol
H)cystein
I)phospholipid
J)prokaryotes
K)glycolipid
L)20 or 24
M)spingosine
N)serine 
A) ether-linked lipid 
B) triacylglycerol 
C) sterol 
D) amphipathic 
E) 16 or 18
F)organic solvent
G)cholesterol
H)cystein
I)phospholipid
J)prokaryotes
K)glycolipid
L)20 or 24
M)spingosine
N)serine

Exam 11: Lipids

Membranes lipids are primarily comprised of:

What are the two systems for naming the positions of the double bonds? Provide examples.

Define the different chemical characteristics for these phospholipids: phosphatidylserine, phosphatidylcholine, and phosphatidylinositol.

A phosphatidate lipid (phosphatidic acid) has which of the following components?

Octadecatrienoic acid has how many double bonds?

What does the notation 18:2 for fatty acids imply?

Choose the correct answer from the list below. Not all of the answers will be used. -Lipids which contain carbohydrates is/are ____________.

What are some molecules that form the polar head group of phospholipids? Provide several examples.

Choose the correct answer from the list below. Not all of the answers will be used. -____________: A type of lipid with two acyl chains, a glycerol backbone, and a polar head group.

The presence of double bonds in fatty acids limits tight packaging and the number of ________________ interactions.

Choose the correct answer from the list below. Not all of the answers will be used. -____________: The storage form of fatty acids.

Choose the correct answer from the list below. Not all of the answers will be used. -In addition to phospholipids and glycolipids, ____________ is a major type of membrane lipid.

What is the difference between a sphingolipid and a glycerolipid?

Why might a protein be covalently attached to a lipid?

Choose the correct answer from the list below. Not all of the answers will be used. -____________ is a flat polycylic molecule that is absent in prokaryotic membranes.

An w-3 fatty acid:

Based on your knowledge of lipids, explain why some fats from plants are oils (liquid at room temperature) and animal fats are solid at room temperature.

How does the structure of cholesterol give it a unique structural quality among the lipids?

Draw and label a typical phospholipid.

Choose the correct answer from the list below. Not all of the answers will be used. -____________: A term applied to molecules that have both hydrophilic and hydrophobic moieties.

Biochemistry and the Unity of Life

Water, Weak Bonds, and the Generation of Order Out of Chaos

Amino Acids

Protein Three-Dimensional Structure

Techniques in Protein Biochemistry

Basic Concepts of Enzyme Action

Kinetics and Regulation

Mechanisms and Inhibitors

Hemoglobin: an Allosteric Protein

Carbohydrates

Membrane Structure and Function

Signal Transduction Pathways

Digestion: Turning a Meal Into Cellular Biochemicals

Metabolism: Basic Concepts and Design

Glycolysis

Gluconeogenesis

Preparation for the Cycle

Harvesting Electrons From the Cycle

The Electron Transport Chain

The Proton-Motive Force

The Light Reactions

The Calvin Cycle

Glycogen Degradation

Glycogen Synthesis

The Pentose Phosphate Pathway

Fatty Acid Degredation

Fatty Acid Synthesis

Lipid Synthesis

Amino Acid Degradation and the Urea Cycle

Amino Acids Synthesis

Nucleotide Metabolism

The Structure of Informational Macromolecules: Dna and Rna

DNA Replication

DNA Repair and Recombination

RNA Synthesis and Regulation in Prokaryotes

Gene Expression in Eukaryotes

RNA Processing in Eukaryotes

The Genetic Code

The Mechanism of Protein Synthesis

Recombinant DNA Techniques

Filters