Question 1

Which property has not been observed for membrane proteins?

Accepted Answer

A)  being degraded for energy during biological pathways 
B)  transport of substances into and out of the cell 
C)  catalysis (enzymatic activity) 
D)  acting as a receptor 
A)  being degraded for energy during biological pathways 
B)  transport of substances into and out of the cell 
C)  catalysis (enzymatic activity) 
D)  acting as a receptor

Question 2

Vitamin E has all of the following properties, except:

Accepted Answer

A)  It is an antioxidant. 
B)  It can be made in the sunshine. 
C)  It is essential for at least some mammal's fertility. 
D)  It is often a component of membranes. 
E)  All of these describe vitamin E. 
A)  It is an antioxidant. 
B)  It can be made in the sunshine. 
C)  It is essential for at least some mammal's fertility. 
D)  It is often a component of membranes. 
E)  All of these describe vitamin E.

Question 3

Which of the following methods of transport across a membrane does not require a protein?

Accepted Answer

A)  Passive transport 
B)  Facilitated transport 
C)  Active Transport 
D)  Simple diffusion 
E)  they all require a protein 
A)  Passive transport 
B)  Facilitated transport 
C)  Active Transport 
D)  Simple diffusion 
E)  they all require a protein

Question 4

Which of the following was not a desired goal of hydrogenating polyunsaturated fatty acids in butter-like spreads?

Accepted Answer

A)  To make the compound have the consistency of butter 
B)  To make the compoound a solid at room temperature 
C)  To put trans double bonds into the molecule 
D)  To remove some of the double bonds in the molecule 
A)  To make the compound have the consistency of butter 
B)  To make the compoound a solid at room temperature 
C)  To put trans double bonds into the molecule 
D)  To remove some of the double bonds in the molecule

Question 5

What distinguishes primary from secondary active transport?

Accepted Answer

A)  The requirement for protein. 
B)  The type of linkage to ATP hydrolysis 
C)  The number of kinds of molecules or ions transported 
D)  The relative direction of transport 
A)  The requirement for protein. 
B)  The type of linkage to ATP hydrolysis 
C)  The number of kinds of molecules or ions transported 
D)  The relative direction of transport

Question 6

The myelin sheaths of neurons typically contain large amounts of

Accepted Answer

A)  waxes 
B)  triacylglycerols 
C)  cholesterol 
D)  sphingolipids 
A)  waxes 
B)  triacylglycerols 
C)  cholesterol 
D)  sphingolipids

Question 7

The order-disorder transition (melting) in membranes

Accepted Answer

A)  is cooperative 
B)  can be monitored by fluorescence techniques 
C)  can be monitored by spin labeling 
D)  all of these 
A)  is cooperative 
B)  can be monitored by fluorescence techniques 
C)  can be monitored by spin labeling 
D)  all of these

Question 8

The association of membrane proteins with lipids in the membrane bilayer always involves

Accepted Answer

A)  electrostatic interactions 
B)  hydrophobic interactions 
C)  covalent linkages 
D)  all of the above 
A)  electrostatic interactions 
B)  hydrophobic interactions 
C)  covalent linkages 
D)  all of the above

Question 9

Facilitated diffusion requires

Accepted Answer

A)  a channel protein through which the transported substance passes without binding 
B)  a carrier protein to which the transported substance binds 
C)  a receptor protein 
D)  expenditure of energy by the cell 
A)  a channel protein through which the transported substance passes without binding 
B)  a carrier protein to which the transported substance binds 
C)  a receptor protein 
D)  expenditure of energy by the cell

Question 10

Cell membranes typically display asymmetry. What does this mean?

Accepted Answer

A)  The two leaves of a bilayer contain different collections of lipids and proteins. 
B)  The fatty acyl chain on C-1 of a membrane lipid is usually different from that on C-3. 
C)  Only one stereoisomer is ever seen at the chiral C-2 of the glycerol residue in a membrane lipid. 
D)  Membrane lipids only have cis double bonds, never trans. 
A)  The two leaves of a bilayer contain different collections of lipids and proteins. 
B)  The fatty acyl chain on C-1 of a membrane lipid is usually different from that on C-3. 
C)  Only one stereoisomer is ever seen at the chiral C-2 of the glycerol residue in a membrane lipid. 
D)  Membrane lipids only have cis double bonds, never trans.

Which property has not been observed for membrane proteins?

Vitamin E has all of the following properties, except:

Which of the following methods of transport across a membrane does not require a protein?

Which of the following was not a desired goal of hydrogenating polyunsaturated fatty acids in butter-like spreads?

What distinguishes primary from secondary active transport?

The myelin sheaths of neurons typically contain large amounts of

The order-disorder transition (melting) in membranes

The association of membrane proteins with lipids in the membrane bilayer always involves

Facilitated diffusion requires

Cell membranes typically display asymmetry. What does this mean?

Biochemistry and the Organization of Cells

Water: the Solvent for Biochemical Reactions

Amino Acids and Peptides

The Three-Dimensional Structure of Proteins

Protein Purification and Characterization Techniques

The Behavior of Proteins: Enzymes

The Behavior of Proteins: Enzymes, Mechanisms, and Control

Nucleic Acids: How Structure Conveys Information

Biosynthesis of Nucleic Acids: Replication

Transcription of the Genetic Code: Biosynthesis of RNA

Protein Synthesis: Translation of the Genetic Message

Nucleic Acid Biotechnology Techniques

Viruses, Cancer, and Immunology

The Importance of Energy Changes and Electron Transfer in Metabolism

Carbohydrates

Glycolysis

Storage Mechanisms and Control in Carbohydrate Metabolism

The Citric Acid Cycle

Electron Transport and Oxidative Phosphorylation

Lipid Metabolism

Photosynthesis

The Metabolism of Nitrogen

Integration of Metabolism: Cellular Signaling

Filters

Exam 8: Lipids and Proteins Are Associated in Biological Membranes

Which property has not been observed for membrane proteins?

Vitamin E has all of the following properties, except:

Which of the following methods of transport across a membrane does not require a protein?

Which of the following was not a desired goal of hydrogenating polyunsaturated fatty acids in butter-like spreads?

What distinguishes primary from secondary active transport?

The myelin sheaths of neurons typically contain large amounts of

The order-disorder transition (melting) in membranes

The association of membrane proteins with lipids in the membrane bilayer always involves

Facilitated diffusion requires

Cell membranes typically display asymmetry. What does this mean?

Biochemistry and the Organization of Cells

Water: the Solvent for Biochemical Reactions

Amino Acids and Peptides

The Three-Dimensional Structure of Proteins

Protein Purification and Characterization Techniques

The Behavior of Proteins: Enzymes

The Behavior of Proteins: Enzymes, Mechanisms, and Control

Nucleic Acids: How Structure Conveys Information

Biosynthesis of Nucleic Acids: Replication

Transcription of the Genetic Code: Biosynthesis of RNA

Protein Synthesis: Translation of the Genetic Message

Nucleic Acid Biotechnology Techniques

Viruses, Cancer, and Immunology

The Importance of Energy Changes and Electron Transfer in Metabolism

Carbohydrates

Glycolysis

Storage Mechanisms and Control in Carbohydrate Metabolism

The Citric Acid Cycle

Electron Transport and Oxidative Phosphorylation

Lipid Metabolism

Photosynthesis

The Metabolism of Nitrogen

Integration of Metabolism: Cellular Signaling

Filters