Question 1

Which of the following was the first kinesin to be discovered?

Accepted Answer

A)  microtubule-linked kinesin 
B)  conventional kinesin 
C)  actin-coupled kinesin 
D)  $\alpha$-kinesin 
E)  AAA kinesin 
A)  microtubule-linked kinesin 
B)  conventional kinesin 
C)  actin-coupled kinesin 
D)  $\alpha$-kinesin 
E)  AAA kinesin

Question 2

A molecule such as glucose that attracts bacteria is known as a _____.

Accepted Answer

A)  chemorepellant 
B)  chemostimulant 
C)  chemoattractant 
D)  chemotactic 
E)  chemostatic 
A)  chemorepellant 
B)  chemostimulant 
C)  chemoattractant 
D)  chemotactic 
E)  chemostatic

Question 3

How does the length of the lever arm affect the rate?

Accepted Answer

A)  A mutated shorter arm has a reduced rate. 
B)  A mutated longer arm has a reduced rate. 
C)  A mutated longer arm has a faster rate. 
D)  A and B are correct. 
E)  A and C are correct. 
A)  A mutated shorter arm has a reduced rate. 
B)  A mutated longer arm has a reduced rate. 
C)  A mutated longer arm has a faster rate. 
D)  A and B are correct. 
E)  A and C are correct.

Question 4

During a muscle contraction,the thin filaments (actin,tropomyosin,troponin)slide along the _________________.

Accepted Answer

thick fila

Question 5

Which of the following is a proteolytic fragment of muscle myosin?

Accepted Answer

A)  heavy chain 
B)  S1 
C)  P-loop NTPase 
D)  EF-hand domain 
E)  $\alpha$-meromyosin 
A)  heavy chain 
B)  S1 
C)  P-loop NTPase 
D)  EF-hand domain 
E)  $\alpha$-meromyosin

Question 6

To what other protein families are myosin,kinesin,and dynein related (in humans)?

Accepted Answer

While amino acid sequences are varied,th

Question 7

Microtubules are tracks for kinesins and _________________.

Accepted Answer

The answer of Microtubules are tracks for kinesins and _________________....

Question 8

Bacterial flagella rotate in one direction for smooth swimming and in the other direction to cause _______________.

Accepted Answer

The answer of Bacterial flagella rotate in one direction for...

Question 9

What is the name given to actin monomers?

Accepted Answer

A)  B-actin 
B)  D-actin 
C)  G-actin 
D)  M-actin 
E)  S-actin 
A)  B-actin 
B)  D-actin 
C)  G-actin 
D)  M-actin 
E)  S-actin

Question 10

The biased random walk of bacteria is the result of swimming with

Accepted Answer

A)  less tumbling when Ca2+ levels are low. 
B)  more tumbling when moving toward a chemorepellant. 
C)  more tumbling when moving toward a chemoatractant. 
D)  more tumbling when ATP binds the flagellar motor. 
E)  None of the answers is correct. 
A)  less tumbling when Ca2+ levels are low. 
B)  more tumbling when moving toward a chemorepellant. 
C)  more tumbling when moving toward a chemoatractant. 
D)  more tumbling when ATP binds the flagellar motor. 
E)  None of the answers is correct.

Question 11

Describe the experiment that supports the proposed role of the lever arm in myosin motor activity.

Accepted Answer

Investigators deleted sequences to short

Question 12

What was learned using the optical trap laser studies?

Accepted Answer

The studies indicated that myosin heads

Question 13

The structure in a bacterial flagellar motor that rotates is referred to as

Accepted Answer

A)  the MS ring. 
B)  flagellin. 
C)  CheY. 
D)  C-ring 
E)  None of the answers is correct. 
A)  the MS ring. 
B)  flagellin. 
C)  CheY. 
D)  C-ring 
E)  None of the answers is correct.

Question 14

The major family(ies)of eukaryotic motor proteins is (are)

Accepted Answer

A)  myosins. 
B)  kinesins. 
C)  dyneins. 
D)  myosins and kinesins. 
E)  All the answers are correct. 
A)  myosins. 
B)  kinesins. 
C)  dyneins. 
D)  myosins and kinesins. 
E)  All the answers are correct.

Question 15

Myosin light chains are related to the _______________ family of proteins.

Accepted Answer

The answer of Myosin light chains are related to the...

Question 16

What is the energy source used to rotate the flagella?

Accepted Answer

A)  ATP 
B)  proton gradient 
C)  beta oxidation 
D)  GTP 
E)  None of the answers is correct. 
A)  ATP 
B)  proton gradient 
C)  beta oxidation 
D)  GTP 
E)  None of the answers is correct.

Question 17

What is the banding pattern observed in muscle cells?

Accepted Answer

Dark and light bands repeat and are call

Question 18

The change in position along a microtubule by the two kinesin monomers is transmitted through a __________________.

Accepted Answer

The answer of The change in position along a microtubule...

Question 19

A helical section of myosin that moves dramatically when NTP is bound is called the ________.

Accepted Answer

The answer of A helical section of myosin that moves...

Question 20

Which of the following is a prokaryotic protein similar to tubulin?

Accepted Answer

A)  troponin 
B)  tubulin 
C)  axoneme 
D)  flagellin 
E)  FtsZ 
A)  troponin 
B)  tubulin 
C)  axoneme 
D)  flagellin 
E)  FtsZ

Exam 35: Molecular Motors

Which of the following was the first kinesin to be discovered?

A molecule such as glucose that attracts bacteria is known as a _____.

How does the length of the lever arm affect the rate?

During a muscle contraction,the thin filaments (actin,tropomyosin,troponin)slide along the _________________.

Which of the following is a proteolytic fragment of muscle myosin?

To what other protein families are myosin,kinesin,and dynein related (in humans)?

Microtubules are tracks for kinesins and _________________.

Bacterial flagella rotate in one direction for smooth swimming and in the other direction to cause _______________.

What is the name given to actin monomers?

The biased random walk of bacteria is the result of swimming with

Describe the experiment that supports the proposed role of the lever arm in myosin motor activity.

What was learned using the optical trap laser studies?

The structure in a bacterial flagellar motor that rotates is referred to as

The major family(ies)of eukaryotic motor proteins is (are)

Myosin light chains are related to the _______________ family of proteins.

What is the energy source used to rotate the flagella?

What is the banding pattern observed in muscle cells?

The change in position along a microtubule by the two kinesin monomers is transmitted through a __________________.

A helical section of myosin that moves dramatically when NTP is bound is called the ________.

Which of the following is a prokaryotic protein similar to tubulin?

Biochemistry: An Evolving Science

Protein Composition and Structure

Exploring Proteins and Proteomes

DNA, RNA, and the Flow of Genetic Information

Exploring Genes and Genomes

Exploring Evolution and Bioinformatics

Hemoglobin: a Portrait of a Protein in Action

Enzymes: Basic Concepts and Kinetics

Catalytic Strategies

Regulatory Strategies

Carbohydrates

Lipids and Cell Membranes

Membrane Channels and Pumps

Signal-Transduction Pathways

Metabolism: Basic Concepts and Design

Glycolysis and Gluconeogenesis

The Citric Acid Cycle

Oxidative Phosphorylation

The Light Reactions of Photosynthesis

The Calvin Cycle and the Pentose Phosphate Pathway

Glycogen Metabolism

Fatty Acid Metabolism

Protein Turnover and Amino Acid Catabolism

The Biosynthesis of Amino Acids

Nucleotide Biosynthesis

Biosynthesis of Membrane Lipids and Steroids

The Integration of Metabolism

DNA Replication, repair, and Recombination

RNA Synthesis and Processing

Protein Synthesis

The Control of Gene Expression in Prokaryotes

The Control of Gene Expression in Eukaryotes

Sensory Systems

The Immune System

Drug Development

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