Question 1

ATP is hydrolyzed by actin

Accepted Answer

A)  in the process of assembly into a filament. 
B)  after assembly but before disassembly. 
C)  in the process of disassociation. 
D)  after disassociation from the filament. 
A)  in the process of assembly into a filament. 
B)  after assembly but before disassembly. 
C)  in the process of disassociation. 
D)  after disassociation from the filament.

Question 2

Actin exists in cells in two major forms called

Accepted Answer

A)  monomers and dimers. 
B)  $\alpha$-actin and $\beta$-actin. 
C)  G actin and D actin. 
D)  G actin and F actin. 
A)  monomers and dimers. 
B)  $\alpha$-actin and $\beta$-actin. 
C)  G actin and D actin. 
D)  G actin and F actin.

Question 3

Which nucleotide triphosphate is hydrolyzed during a cycle of microtubule assembly and disassembly?

Accepted Answer

A)  ATP 
B)  TTP 
C)  CTP 
D)  GTP 
A)  ATP 
B)  TTP 
C)  CTP 
D)  GTP

Question 4

How does Ca2+ regulate the activity of myosin motors in striated muscle, nonmuscle, and smooth muscle cells?

Accepted Answer

In striated muscle, actin-myosin contrac

Question 5

Keratin filaments are anchored to junctions called

Accepted Answer

A)  adherens junctions. 
B)  tight junctions. 
C)  desmosomes. 
D)  gap junctions. 
A)  adherens junctions. 
B)  tight junctions. 
C)  desmosomes. 
D)  gap junctions.

Question 6

Actin filaments are stabilized by

Accepted Answer

A)  cofilin. 
B)  gelsolin. 
C)  thymosin. 
D)  tropomyosin. 
A)  cofilin. 
B)  gelsolin. 
C)  thymosin. 
D)  tropomyosin.

ATP is hydrolyzed by actin

Actin exists in cells in two major forms called

Which nucleotide triphosphate is hydrolyzed during a cycle of microtubule assembly and disassembly?

How does Ca²⁺ regulate the activity of myosin motors in striated muscle, nonmuscle, and smooth muscle cells?

Keratin filaments are anchored to junctions called

Actin filaments are stabilized by

An Overview of Cells and Cell Research

Molecules and Membranes

Bioenergetics and Metabolism

Fundamentals of Molecular Biology

Genomics, Proteomics, and Systems Biology

Genes and Genomes

Replication, Maintenance, and Rearrangements of Genomic Dna

RNA Synthesis and Processing

Transcriptional Regulation and Epigenetics

Protein Synthesis, Processing, and Regulation

The Nucleus

Protein Sorting and Transport

Mitochondria, Chloroplasts, and Peroxisomes

The Plasma Membrane

Cell Walls, the Extracellular Matrix, and Cell Interactions

Cell Signaling

The Cell Cycle

Cell Death and Cell Renewal

Cancer

Filters

Exam 14: The Cytoskeleton and Cell Movement

ATP is hydrolyzed by actin

Actin exists in cells in two major forms called

Which nucleotide triphosphate is hydrolyzed during a cycle of microtubule assembly and disassembly?

How does Ca2+ regulate the activity of myosin motors in striated muscle, nonmuscle, and smooth muscle cells?

Keratin filaments are anchored to junctions called

Actin filaments are stabilized by

An Overview of Cells and Cell Research

Molecules and Membranes

Bioenergetics and Metabolism

Fundamentals of Molecular Biology

Genomics, Proteomics, and Systems Biology

Genes and Genomes

Replication, Maintenance, and Rearrangements of Genomic Dna

RNA Synthesis and Processing

Transcriptional Regulation and Epigenetics

Protein Synthesis, Processing, and Regulation

The Nucleus

Protein Sorting and Transport

Mitochondria, Chloroplasts, and Peroxisomes

The Plasma Membrane

Cell Walls, the Extracellular Matrix, and Cell Interactions

Cell Signaling

The Cell Cycle

Cell Death and Cell Renewal

Cancer

Filters

How does Ca²⁺ regulate the activity of myosin motors in striated muscle, nonmuscle, and smooth muscle cells?