Which of the following statements about the cytoskeleton is TRUE? O A) The cytoskeleton provides a rigid and unchangeable structure important for the shape of the cell. O B) Actin filaments and microtubules, but not intermediate filaments, have an inherent polarity, with a plus (+) end that grows more quickly than the minus (-) end. O C) The three types of cytoskeletal filaments perform tasks in the cell and act completely independently of one another. O D) All cytoskeletal elements support motor protein function. O E) All of the above statements are true.
Which of the following statements about the cytoskeleton is TRUE? O A) The cytoskeleton provides a rigid and unchangeable structure important for the shape of the cell. O B) Actin filaments and microtubules, but not intermediate filaments, have an inherent polarity, with a plus (+) end that grows more quickly than the minus (-) end. O C) The three types of cytoskeletal filaments perform tasks in the cell and act completely independently of one another. O D) All cytoskeletal elements support motor protein function. O E) All of the above statements are true.
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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Transcribed Image Text:Which of the following statements about the cytoskeleton is TRUE?
O A) The cytoskeleton provides a rigid and unchangeable structure important for the shape of the cell.
O B) Actin filaments and microtubules, but not intermediate filaments, have an inherent polarity, with a plus (+)
end that grows more quickly than the minus (-) end.
O C) The three types of cytoskeletal filaments perform tasks in the cell and act completely independently of
one another.
O D) All cytoskeletal elements support motor protein function,
O E) All of the above statements are true.
Transcribed Image Text:Which of the following statements about the cytoskeleton is FALSE?
O A) The cytoskeleton is made up of three types of protein filaments/tubes and associated proteins.
O B) The cytoskeleton controls the location of organelles in eukaryotic cells.
O C) Covalent bonds between protein subunits hold together cytoskeletal structures.
O D) The cytoskeleton of a cell can change in response to the extracellular signals.
O E) Mitochondria and chloroplasts contain their own cytoskeleton.
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