Multiple Choice
In human cells, ___________________ are used to move a cell within its environment while ___________________ are used to move objects in the environment relative to the cell.
5. Cell Components
Introduction to the Cytoskeleton
Multiple Choice
Cilia and flagella move due to the interaction of the cytoskeleton with which of the following?
A
Actin
B
Pseudopodia
C
Mitochondria
D
Tubulin
E
Motor proteins
Verified step by step guidance1
Understand the structure of cilia and flagella: Both cilia and flagella are hair-like structures that extend from the surface of many eukaryotic cells. They are primarily composed of microtubules arranged in a '9+2' structure, which is crucial for their movement.
Identify the role of microtubules: Microtubules are part of the cytoskeleton and are made of tubulin proteins. They provide structural support and are involved in various cellular processes, including the movement of cilia and flagella.
Recognize the function of motor proteins: Motor proteins, such as dynein, interact with microtubules to facilitate movement. Dynein is responsible for the sliding motion between microtubules, which results in the bending of cilia and flagella.
Differentiate between actin and tubulin: Actin is another cytoskeletal protein, but it is primarily involved in muscle contraction and cell movement through pseudopodia, not in the movement of cilia and flagella.
Conclude the interaction: The movement of cilia and flagella is due to the interaction between microtubules (tubulin) and motor proteins (such as dynein), not actin, pseudopodia, or mitochondria.
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