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Which of the following is true about kinesin-1? O It is the fastest of all motors ○ It is a (+) to (-) motor It transports cargo towards the centrosome O It is a dimer

Which of the following is true about kinesin-1? O It is the fastest of all motors ○ It is a (+) to (-) motor It transports cargo towards the centrosome O It is a dimer

Human Anatomy & Physiology (11th Edition)
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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**Question: Which of the following is true about kinesin-1?** 1. ⭘ It is the fastest of all motors 2. ⭘ It is a (+) to (-) motor 3. ⭘ It transports cargo towards the centrosome 4. ⭘ It is a dimer **Explanation:** This question is intended to assess knowledge about kinesin-1, a type of molecular motor. Kinesin-1 is involved in intracellular transport and has specific characteristics that distinguish it from other molecular motors. Analyzing the options provided: - Option 1: "It is the fastest of all motors" - This statement is not true as the speed of molecular motors can vary. - Option 2: "It is a (+) to (-) motor" - This statement is incorrect as kinesin-1 typically moves from the (-) end to the (+) end of microtubules. - Option 3: "It transports cargo towards the centrosome" - This statement is not correct because kinesin-1 generally moves cargo away from the centrosome, towards the cell periphery. - Option 4: "It is a dimer" - This statement is true. Kinesin-1 is a dimer, meaning it is composed of two identical subunits. This question tests the understanding of the structure and function of kinesin-1 in cellular biology.
Transcribed Image Text:**Question: Which of the following is true about kinesin-1?** 1. ⭘ It is the fastest of all motors 2. ⭘ It is a (+) to (-) motor 3. ⭘ It transports cargo towards the centrosome 4. ⭘ It is a dimer **Explanation:** This question is intended to assess knowledge about kinesin-1, a type of molecular motor. Kinesin-1 is involved in intracellular transport and has specific characteristics that distinguish it from other molecular motors. Analyzing the options provided: - Option 1: "It is the fastest of all motors" - This statement is not true as the speed of molecular motors can vary. - Option 2: "It is a (+) to (-) motor" - This statement is incorrect as kinesin-1 typically moves from the (-) end to the (+) end of microtubules. - Option 3: "It transports cargo towards the centrosome" - This statement is not correct because kinesin-1 generally moves cargo away from the centrosome, towards the cell periphery. - Option 4: "It is a dimer" - This statement is true. Kinesin-1 is a dimer, meaning it is composed of two identical subunits. This question tests the understanding of the structure and function of kinesin-1 in cellular biology.
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