Multiple Choice
Where do motor proteins get the energy to move molecules throughout the cell?
15. Cytoskeleton and Cell Movement
Kinesins and Dyneins
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Which of the following motor protein structures directly attaches to the cargo to transport it throughout the cell?
A
One globular head
B
Both globular heads together
C
The motor protein tail
D
The microtubule
Verified step by step guidance1
Understand the role of motor proteins in the cell: Motor proteins are responsible for moving cargo, such as organelles and vesicles, along the cytoskeleton within the cell.
Identify the structure of motor proteins: Motor proteins typically have a head region that interacts with the cytoskeletal filaments (like microtubules or actin filaments) and a tail region that attaches to the cargo.
Recognize the function of the globular heads: The globular heads of motor proteins, such as kinesin and dynein, bind to and 'walk' along the microtubules, using ATP as an energy source.
Determine the role of the motor protein tail: The tail region of the motor protein is responsible for binding to the cargo that needs to be transported within the cell.
Conclude that the motor protein tail is the structure that directly attaches to the cargo, allowing the motor protein to transport it throughout the cell.
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