Cell Organization And Movement I Microfilaments - Molecular Cell Biology | Biology+

Course

Cell Biology

Study Pack

Set 1: Chemical Foundations

Set 2: Molecular Genetic Techniques

Set 3: Protein Structure and Function

Set 4: Culturing and Visualizing Cells

Set 5: Fundamental Molecular Genetic Mechanisms

Set 6: Bio-membrane Structure

Set 7: Genes Genomics and Chromosomes

Set 8: Transcriptional Control of Gene Expression

Set 9: Post-Transcriptional Gene Control

Set 10: Transmembrane Transport of Ions and Small Molecules

Set 11: Cellular Energetics

Set 12: Moving Proteins Into Membranes and Organelles

Set 13: Vesicular Traffic, Secretion, and Endocytosis

Set 14: Signal Transduction and G-Protein Coupled Receptors

Set 15: Signaling Pathways That Control Gene Activity

Set 16: Cell Organization and Movement I: Microfilaments

Set 17: Cell Organization and Movement II: Microtubules and Intermediate Filaments

Set 18: Regulating the Eukaryotic Cell Cycle

Set 19: Integrating Cells Into Tissues

Set 30: Cell Birth, Lineage, and Death

Set 21: Nerve Cells

Set 22: Immunology

Set 17 Cell Organization And Movement I Microfilaments

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Set 17 Cell Organization And Movement I Microfilaments

(Multiple Choice)

Free

Actin-binding proteins that generate actin filament bundles:

A)are long and flexible.
B)bind only to the ends of actin filaments.
C)can also bundle microtubules.
D)are short and inflexible.

Answer

(Multiple Choice)

Free

All of the following statements about actin assembly are correct EXCEPT:

A)ATP-actin can assemble into filaments.
B)actin subunits can treadmill through an actin filament.
C)actin assembly can produce force for movement.
D)actin (−)ends assemble more rapidly than actin (+)ends.

Answer

(Multiple Choice)

Free

Which of the following proteins promotes actin assembly and is involved in signaling pathways controlling actin assembly at the plasma membrane?

A)myosin
B)profilin
C)thymosin β₄
D)filamin

Answer