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Question
The myosin can cause pulling of the actin filaments to cause muscle contraction. Actin filaments have ATPase activity that hydrolyse ATP. Actin regulating proteins are required for the formation of actin bundles. Therefore all statements are true. Hence option c is correct.
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Which of the following is true concerning actin filaments and their associated proteins? Myosin can cause...
b) Which of the following are true statements about myosin? Select all the true statements. Each...
b) Which of the following are true statements about myosin? Select all the true statements. Each myosin head has a binding site for actin and ATP The interaction between myosin and actin converts chemical energy to mechanicall work muscle contraction, thick and thin filaments slide past each other causing an overall lengthening of the muscle. In a muscle cell, myosin tails group together to form a thick filament The myosin-actin reaction cycle is powered by ATP hydrolysis The tail of...
NAME SID 25. Usted below are different steps that occur during the excitation and contraction of...
NAME SID 25. Usted below are different steps that occur during the excitation and contraction of a muscle fiber. Please select the correct sequence in which these stages occur. 1) Ca2+ binds to Tropomyosin, causing a conformational change that unblocks cross-bridge binding sites. 2) The Sarcoplasmic Reticulum is depolarized, which opens up Voltage-Gated Channels that release Ca2+ into the cytoplasm. 3) The Action Potential then travels along the cell membrane and down transverse tubules that extend into the muscle fiber....
Which of the following statements is false? Q 17-7 Homework Unanswered. Due in a day Which...
Which of the following statements is false?
Q 17-7 Homework Unanswered. Due in a day Which statement is FALSE? A Kinesins would be likely to move cargoes along microtubules toward the periphery of the cell o B A dynein would be the most likely motor protein to deliver a signal from the cell periphery to the nucleus O C Myosin I can control cell shape by pulling the plasma membrane along actin filaments D M yosin II promotes flagella movement...
4) Studying the motility of the pathogenic bacteria Listeria and Shigella, which cause food poisoning and...
4) Studying the motility of the pathogenic bacteria Listeria and Shigella, which cause food poisoning and dysentery, respectively, significantly advanced our understanding of actin polymerization. These bacteria escape immune surveillance by entering one cell’s cytoplasm and then spreading from cell to cell without exposing themselves to the outside environment. They harness actin polymerization to push themselves against the plasma membrane, generating a membrane protrusion that is engulfed by a neighboring cell, giving them direct access to that cell’s cytoplasm. The...
4. Please match each of the following structures with its correct description (4 pts) Tropomyosin Titin...
4. Please match each of the following structures with its correct description (4 pts) Tropomyosin Titin Myosin Troponin Sarcoplasmic reticulum e. elastic filament that anchors the thick myofilaments to the Z-disc complex of T-Tubules a. main protein of the thick filament, head has two binding sites one binds actir b. long, filament protein covering the myosin-binding sites on each actin molecule c. main protein of the thin myofilament, each individual protein has a high affinity d. control protein on the...
Question 78 Which of the following statements about the cytoskeleton is TRUE? All eukaryotic cells have...
Question 78 Which of the following statements about the cytoskeleton is TRUE? All eukaryotic cells have actin, microtubules, and intermediate filaments in their cytoplasm The cytoskeleton provides a rigid and unchangeable structure important for the shape of the cell. The three cytoskeletal filaments perform distinct tasks in the cell and act completely independently of one another Actin filaments and microtubules have an inherent polarity, with a plus end that grows more quickly than the minus end С. D Question 79...
Which protein molecule covers and ides the bindingston the actin bert During contraction of muscle fiber...
Which protein molecule covers and ides the bindingston the actin bert During contraction of muscle fiber sliding o montina sarcom makes the one become arger Which type of neurogalls are Tropomni-troponin O b. myosin blood-brain bar TRUE FALSE a Schance Odrocytes Select one TRUE FALSE the layer of connective Which of the following neuroga are NOT found in the CNS a Schools Olodendrocytes Astrocytes Endom b. Perimysium О с. Itemyum Weblink for Virtual Class meetings Collections of myelinated in the...
Question 1 of 8 2.0 Points Which of the following statements about the cytoskeleton is false?...
Question 1 of 8 2.0 Points Which of the following statements about the cytoskeleton is false? A. The cytoskeleton is made up of three types of protein filaments. B. The cytoskeleton controls the location of organelles in eukaryotic cells. C. Covalent bonds between protein monomers hold together cytoskeletal filaments. D. The cytoskeleton of a cell can change in response to the environment. Reset Selection Question 2 of 8 2.0 Points Which of the following statements about the function of the...
Which of the following statements about globular proteins are true? - The protein folds to make...
Which of the following statements about globular proteins are true? - The protein folds to make itself as compact as possible. - The packing of the protein is such that hydrophilic residues appear on the surface where they can interact with an aqueous environment. - β sheets are usually twisted, or wrapped into barrel structures. - All parts of a globular protein can be classified as helix, β sheet, or turns. Only statement 3 is correct Statements 1, 2, and...
Which of the following concerning microbicidal agents are true? A.They can be used to evaluate the...
Which of the following concerning microbicidal agents are true? A.They can be used to evaluate the generation time of bacteria B.they kill all microbes simultaneously c.kill a constant percentage of cells overtime d.are equally effective against all microbes e.none of the above
b) Which of the following are true statements about myosin? Select all the true statements. Each myosin head has a binding site for actin and ATP The interaction between myosin and actin converts chemical energy to mechanicall work muscle contraction, thick and thin filaments slide past each other causing an overall lengthening of the muscle. In a muscle cell, myosin tails group together to form a thick filament The myosin-actin reaction cycle is powered by ATP hydrolysis The tail of...
NAME SID 25. Usted below are different steps that occur during the excitation and contraction of a muscle fiber. Please select the correct sequence in which these stages occur. 1) Ca2+ binds to Tropomyosin, causing a conformational change that unblocks cross-bridge binding sites. 2) The Sarcoplasmic Reticulum is depolarized, which opens up Voltage-Gated Channels that release Ca2+ into the cytoplasm. 3) The Action Potential then travels along the cell membrane and down transverse tubules that extend into the muscle fiber....
Which of the following statements is false?
Q 17-7 Homework Unanswered. Due in a day Which statement is FALSE? A Kinesins would be likely to move cargoes along microtubules toward the periphery of the cell o B A dynein would be the most likely motor protein to deliver a signal from the cell periphery to the nucleus O C Myosin I can control cell shape by pulling the plasma membrane along actin filaments D M yosin II promotes flagella movement...
4. Please match each of the following structures with its correct description (4 pts) Tropomyosin Titin Myosin Troponin Sarcoplasmic reticulum e. elastic filament that anchors the thick myofilaments to the Z-disc complex of T-Tubules a. main protein of the thick filament, head has two binding sites one binds actir b. long, filament protein covering the myosin-binding sites on each actin molecule c. main protein of the thin myofilament, each individual protein has a high affinity d. control protein on the...
Question 78 Which of the following statements about the cytoskeleton is TRUE? All eukaryotic cells have actin, microtubules, and intermediate filaments in their cytoplasm The cytoskeleton provides a rigid and unchangeable structure important for the shape of the cell. The three cytoskeletal filaments perform distinct tasks in the cell and act completely independently of one another Actin filaments and microtubules have an inherent polarity, with a plus end that grows more quickly than the minus end С. D Question 79...
Which protein molecule covers and ides the bindingston the actin bert During contraction of muscle fiber sliding o montina sarcom makes the one become arger Which type of neurogalls are Tropomni-troponin O b. myosin blood-brain bar TRUE FALSE a Schance Odrocytes Select one TRUE FALSE the layer of connective Which of the following neuroga are NOT found in the CNS a Schools Olodendrocytes Astrocytes Endom b. Perimysium О с. Itemyum Weblink for Virtual Class meetings Collections of myelinated in the...
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