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.

Biology (MindTap Course List)

11th Edition

ISBN:9781337392938

Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg

Publisher:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg

Chapter4: Organization Of The Cell

Section4.6: The Cytoskeleton

Problem 1C: In what ways do the functions of the cytoskeleton differ from those of the endomembrane system?

See similar textbooks

Similar questions

Which of the following is a feature common to all three components of the cytoskeleton?
In addition to providing support, the cytoskeleton immobilizes enzymes and organelles in the cytoplasm. What advantage does this immobilization have over allowing the cellcontents to freely diffuse in the cytoplasm?
In addition to providing support, the cytoskeleton immobilizes enzymes and moves organelles to suitable positions in the cytoplasm. What advantage do these circumstances have over allowing the cell contents to freely diffuse in the cytoplasm?
Which of the following is a feature common to all three components of the cytoskeleton? a. They all serve to scaffold the organelles within the cell. b. They are all characterized by roughly the same diameter. c. They are all polymers of protein subunits. d. They all help the cell resist compression and tension.
if you visualize the cytoskeleton of a cell that is expanding in one direction, you typically observed a strong orientation of the cytoskeleton. Please answer the following three questions. a. Would the cytoskeleton be oriented parallel or perpendicular to the direction of cell expansion? b. Would the cellulose fibers in the cell wall be parallel or perpendicular to the cytoskeleton? c. Explain why cytoskeleton, cellulose fibers, and direction of cell expansion have the relationship mentioned in a and b?
Which of the following statements regarding cytoskeletal filaments is FALSE? Microtubules will rapidly disassemble in response to a drop in the ATP concentration. G-actin monomers and alpha-tubulin/beta-tubulin dimers assemble into filaments in their ATP-bound and GTP-bound forms, respectively. Microtubules are stabilized by microtubule-binding proteins, such as Tau. Actin-binding proteins allow F-actin to assemble in cells in many different ways. Hydrolysis of ATP and GTP changes the conformation of the subunits once they are incorporated into actin filaments and microtubules, respectively.
Which of the following is a correct match between a cytoskeletal element and its function? Select one: A. microtubules and chromosome movement B. microfilaments and flagellar motility C. microtubules and cleavage furrow formation D. intermediate filaments and cytoplasmic streaming E. microfilaments and intracellular vesicle transport
In protein synthesis, modification and transport, what will be the correct order of organelles involved in the process? A. nucleus - ribosomes - Golgi complex - vesicles B. endoplasmic reticulum -ribosomes - vesicles Golgi complex C. Golgi complex - endoplasmic reticulum - vesicles - ribosomes D. ribosomes - endoplasmic reticulum - vesicles - Golgi complex One of the meristematic tissues is vascular cambium which is responsible for increasing the diameter of stems and roots. In which part of the plants is the vascular cambium found? A. In structure 4, where they are in the sides of stems and roots. B. In structure 3, where they are located at the base of leaves and internodes. C. In structure 1, where they are covered by lower and upper epidermis of the leaf . D. In Structure 2, where they are located on the tips of stems and roots of the plants .
In protein synthesis, modification and transport, what will be the correct order of organelles involved in the process? A. nucleus - ribosomes - Golgi complex - vesicles B. endoplasmic reticulum -ribosomes - vesicles Golgi complex C. Golgi complex - endoplasmic reticulum - vesicles - ribosomes D. ribosomes - endoplasmic reticulum - vesicles - Golgi complex
List the three types of filaments associated with the cytoskeleton. Identify the structures in cells that are composed of microtubules.
Match the following structures with their definitions: (1) Golgi apparatus (2) mitochondria (3) peroxisomes (4) cilia (5) endoplasmic reticulum (6) cytoskeleton (7) vesicles (8) ribosomesA. sacs that contain enzymes that catalyze a variety of specific biochemical reactions B. structures on which protein synthesis occurs C. structures that house the reactions that release energy from nutrients D. a network of microfilaments and microtubules that supports and shapes a cell E. a structure that adds sugars to certain proteins and processes them for secretion F. membrane-bounded sacs G. a network of membranous channels and sacs where lipids and proteins are synthesized H. hairlike structures that extend from certain cell surfaces and wave abou
Some scientists claim that prokaryotes like bacteria have membrane bound organelles, like chromatophores, anammoxosomes and magnetosomes. What really is the truth because it is widely known that prokaryotes do not have membrane bound organelles. Are these claims true or merely speculative? If this is true, what is the physiological basis for this?