The Drug Cytochalasin Targets Actin fiLaments in the Cytoskeleton, Preventing

question 14

Multiple Choice

The drug cytochalasin targets actin filaments in the cytoskeleton, preventing them from forming. Treatment of a cell with cytochalasin would result in its inability to ______.

• A) form cellular extensions
• B) transport substances within the cell
• C) form the nuclear envelope structure
• D) prevent mutations in its chromosome

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Definitions:

Ligases

Enzymes that catalyze the joining of two molecules by forming a new chemical bond, often requiring the expenditure of energy derived from ATP.

Polymerase

An enzyme that synthesizes long chains or polymers of nucleic acids.

Thermus Aquaticus

A species of bacterium that can tolerate high temperatures, from which Taq polymerase, an enzyme used in PCR, is derived.

Hydrothermal Vents

Deep-sea features where mineral-rich water is released from the Earth's crust, supporting unique ecosystems independent of sunlight.