Question 1

Match each lipid with the appropriate function.
-thromboxane A2

Accepted Answer

A) constricts blood vessels 
B) synthesis of bacterial cell wall 
C) blood clotting 
D) leaf coatings 
E) smooth muscle contraction 
A) constricts blood vessels 
B) synthesis of bacterial cell wall 
C) blood clotting 
D) leaf coatings 
E) smooth muscle contraction

Question 2

A deficiency in the synthesis of sphingomyelins or cerebrosides will most likely result in the improper formation of

Accepted Answer

A) cell surfaces. 
B) cell to cell communication. 
C) nerve cells. 
D) blood groups. 
E) All of the above. 
A) cell surfaces. 
B) cell to cell communication. 
C) nerve cells. 
D) blood groups. 
E) All of the above.

Question 3

An unknown lipid is treated with a mixture of phospholipases A1,A2,C and D.Since no glycerol is formed after this treatment,the lipid is most likely

Accepted Answer

A) phosphatidylethanolamine. 
B) phosphatidylcholine. 
C) plasmologen. 
D) ceramide. 
E) a mixture of A and B. 
A) phosphatidylethanolamine. 
B) phosphatidylcholine. 
C) plasmologen. 
D) ceramide. 
E) a mixture of A and B.

Question 4

Match each technique with its purpose.
-cell fusion

Accepted Answer

A) separate fatty acid esters 
B) separate neutral lipids and phospholipids 
C) separate groups of neutral lipids 
D) lateral movement of proteins in cell membranes 
E) diacylglycerol separation based on chain length and degree of unsaturation 
A) separate fatty acid esters 
B) separate neutral lipids and phospholipids 
C) separate groups of neutral lipids 
D) lateral movement of proteins in cell membranes 
E) diacylglycerol separation based on chain length and degree of unsaturation

Question 5

In signal transduction what is an effector enzyme?

Accepted Answer

A) An integral membrane protein that changes conformation upon binding of a ligand to a cell surface receptor. 
B) A small molecule that diffuses within a cell and carries a signal to its ultimate destination. 
C) A protein bound on the interior of a cell membrane that generates a second messenger. 
D) Protein bound on the exterior surface of a cell and is the receptor site for a ligand. 
A) An integral membrane protein that changes conformation upon binding of a ligand to a cell surface receptor. 
B) A small molecule that diffuses within a cell and carries a signal to its ultimate destination. 
C) A protein bound on the interior of a cell membrane that generates a second messenger. 
D) Protein bound on the exterior surface of a cell and is the receptor site for a ligand.

Question 6

Which can serve as an energy source for secondary active transport?

Accepted Answer

A) Light. 
B) Ion concentration gradient. 
C) Electron transport. 
D) ATP → ADP. 
A) Light. 
B) Ion concentration gradient. 
C) Electron transport. 
D) ATP → ADP.

Question 7

The principle advantage of a cascade mechanism in signal transduction is that one molecule of a ligand can affect many intracellular proteins without crossing the plasma membrane.

Accepted Answer

A) True 
 B)False

Question 8

Which is not a function of cholesterol in mammals?

Accepted Answer

A) Precursor of bile salts. 
B) Transport of Ca²+ across membranes. 
C) Modulate the fluidity of membranes. 
D) Precursor of steroid hormones. 
A) Precursor of bile salts. 
B) Transport of Ca²+ across membranes. 
C) Modulate the fluidity of membranes. 
D) Precursor of steroid hormones.

Question 9

A sea creature richer in ________ can more likely live or migrate to an area of low temperature.

Accepted Answer

A) arachidonic acid 
B) unsaturated fatty acids 
C) saturated fatty acids 
D) eicosanoids 
E) All of the above 
A) arachidonic acid 
B) unsaturated fatty acids 
C) saturated fatty acids 
D) eicosanoids 
E) All of the above

Question 10

Match each lipid with the appropriate function.
-prostaglandin E2

Accepted Answer

A) constricts blood vessels 
B) synthesis of bacterial cell wall 
C) blood clotting 
D) leaf coatings 
E) smooth muscle contraction 
A) constricts blood vessels 
B) synthesis of bacterial cell wall 
C) blood clotting 
D) leaf coatings 
E) smooth muscle contraction

Question 11

All sphingolipids are derivatives of ceramide.

Accepted Answer

A) True 
 B)False

Question 12

Triacylglycerols may have either a net positive charge or a net negative charge.

Accepted Answer

A) True 
 B)False

Question 13

Liposomes consist of ________ bilayers that enclose an aqueous compartment where drugs can be contained for delivery to specific tissues if target proteins are present.

Accepted Answer

A) cholesterol 
B) membrane protein 
C) phospholipids 
D) detergents 
A) cholesterol 
B) membrane protein 
C) phospholipids 
D) detergents

Question 14

Match each technique with its purpose.
-gas chromatography

Accepted Answer

A) separate fatty acid esters 
B) separate neutral lipids and phospholipids 
C) separate groups of neutral lipids 
D) lateral movement of proteins in cell membranes 
E) diacylglycerol separation based on chain length and degree of unsaturation 
A) separate fatty acid esters 
B) separate neutral lipids and phospholipids 
C) separate groups of neutral lipids 
D) lateral movement of proteins in cell membranes 
E) diacylglycerol separation based on chain length and degree of unsaturation

Question 15

According to the current model of cell membrane structure,the two layers of lipids in the bilayer are nearly identical chemically.

Accepted Answer

A) True 
 B)False

Match each lipid with the appropriate function. -thromboxane A2

A deficiency in the synthesis of sphingomyelins or cerebrosides will most likely result in the improper formation of

An unknown lipid is treated with a mixture of phospholipases A1,A2,C and D.Since no glycerol is formed after this treatment,the lipid is most likely

Match each technique with its purpose. -cell fusion

In signal transduction what is an effector enzyme?

Which can serve as an energy source for secondary active transport?

The principle advantage of a cascade mechanism in signal transduction is that one molecule of a ligand can affect many intracellular proteins without crossing the plasma membrane.

Which is not a function of cholesterol in mammals?

A sea creature richer in ________ can more likely live or migrate to an area of low temperature.

Match each lipid with the appropriate function. -prostaglandin E2

All sphingolipids are derivatives of ceramide.

Triacylglycerols may have either a net positive charge or a net negative charge.

Liposomes consist of ________ bilayers that enclose an aqueous compartment where drugs can be contained for delivery to specific tissues if target proteins are present.

Match each technique with its purpose. -gas chromatography

According to the current model of cell membrane structure,the two layers of lipids in the bilayer are nearly identical chemically.

Introduction to Biochemistry

Water

Amino Acids and the Primary Structures of Proteins

Proteins: Three-Dimensional Structure and Function

Properties of Enzymes

Mechanisms of Enzymes

Coenzymes and Vitamins

Carbohydrates

Introduction to Metabolism

Glycolysis

Gluconeogenesis, the Pentose Phosphate Pathway, and Glycogen Metabolism

The Citric Acid Cycle

Electron Transport and Atp Synthesis

Photosynthesis

Lipid Metabolism

Amino Acid Metabolism

Nucleotide Metabolism

Nucleic Acids

DNA Replication, repair, and Recombination

Transcription and RNA Processing

Protein Synthesis

Filters

Exam 9: Lipids and Membranes

Match each lipid with the appropriate function. -thromboxane A2

A deficiency in the synthesis of sphingomyelins or cerebrosides will most likely result in the improper formation of

An unknown lipid is treated with a mixture of phospholipases A1,A2,C and D.Since no glycerol is formed after this treatment,the lipid is most likely

Match each technique with its purpose. -cell fusion

In signal transduction what is an effector enzyme?

Which can serve as an energy source for secondary active transport?

The principle advantage of a cascade mechanism in signal transduction is that one molecule of a ligand can affect many intracellular proteins without crossing the plasma membrane.

Which is not a function of cholesterol in mammals?

A sea creature richer in ________ can more likely live or migrate to an area of low temperature.

Match each lipid with the appropriate function. -prostaglandin E2

All sphingolipids are derivatives of ceramide.

Triacylglycerols may have either a net positive charge or a net negative charge.

Liposomes consist of ________ bilayers that enclose an aqueous compartment where drugs can be contained for delivery to specific tissues if target proteins are present.

Match each technique with its purpose. -gas chromatography

According to the current model of cell membrane structure,the two layers of lipids in the bilayer are nearly identical chemically.

Introduction to Biochemistry

Water

Amino Acids and the Primary Structures of Proteins

Proteins: Three-Dimensional Structure and Function

Properties of Enzymes

Mechanisms of Enzymes

Coenzymes and Vitamins

Carbohydrates

Introduction to Metabolism

Glycolysis

Gluconeogenesis, the Pentose Phosphate Pathway, and Glycogen Metabolism

The Citric Acid Cycle

Electron Transport and Atp Synthesis

Photosynthesis

Lipid Metabolism

Amino Acid Metabolism

Nucleotide Metabolism

Nucleic Acids

DNA Replication, repair, and Recombination

Transcription and RNA Processing

Protein Synthesis

Filters