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Which of the following statements about the molecular arrangement of actin and myosin in myofibrils is/are incorrect?
(i) Each actin (thin filament) is made of 2F (filamentous) actins.
(ii) F-actin is the polymer of G (globular) actin.
(iii) 2F-actins are twisted into a helix.
(iv) Two strands of tropomyosin (protein) lie in the grooves of F-actin.
(v) Troponin molecules (complex proteins) are distributed at regular intervals on the tropomyosin.
(vi) Troponin forms the head of the myosin molecule.
(vii) The myosin is a polymerised protein.
(i) Each actin (thin filament) is made of 2F (filamentous) actins.
(ii) F-actin is the polymer of G (globular) actin.
(iii) 2F-actins are twisted into a helix.
(iv) Two strands of tropomyosin (protein) lie in the grooves of F-actin.
(v) Troponin molecules (complex proteins) are distributed at regular intervals on the tropomyosin.
(vi) Troponin forms the head of the myosin molecule.
(vii) The myosin is a polymerised protein.
- a)(i), (iii) and (vii)
- b)(ii), (iv) and (v)
- c)Only (vi)
- d)Only (iii)
Correct answer is option 'C'. Can you explain this answer?
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Verified Answer
Which of the following statements about the molecular arrangement of a...
A complex troponin protein of three globular peptides (Troponin T - Binding to tropomyosin as well as to the other two troponin components; Troponin I - inhibiting the F-actin - myosin interaction, also binding to other components of troponin; Troponin C - calcium binding polypeptide) is distributed at regular intervals on the tropomyosin. In the resting stage of muscle fibre, a sub - unit of troponin masks the active sites for myosin on the actin filaments.
Most Upvoted Answer
Which of the following statements about the molecular arrangement of a...
The correct answer is option C: Only (vi).
Explanation:
(i) Each actin (thin filament) is made of 2F (filamentous) actins.
This statement is correct. Actin filaments are composed of two strands of filamentous (F) actin molecules that are twisted together.
(ii) F-actin is the polymer of G (globular) actin.
This statement is correct. F-actin is a polymer formed by the polymerization of globular (G) actin molecules.
(iii) 2F-actins are twisted into a helix.
This statement is correct. Two strands of F-actin molecules are twisted together to form a helical structure.
(iv) Two strands of tropomyosin (protein) lie in the grooves of F-actin.
This statement is correct. Tropomyosin molecules lie in the grooves of F-actin and regulate the interaction between actin and myosin.
(v) Troponin molecules (complex proteins) are distributed at regular intervals on the tropomyosin.
This statement is correct. Troponin molecules are complex proteins that are distributed at regular intervals along the length of the tropomyosin strand.
(vi) Troponin forms the head of the myosin molecule.
This statement is incorrect. Troponin does not form the head of the myosin molecule. The head of the myosin molecule is a separate protein structure.
(vii) The myosin is a polymerized protein.
This statement is correct. Myosin is a polymerized protein made up of multiple subunits that form the thick filament in myofibrils.
Overall, statements (i), (ii), (iii), (iv), (vii) are correct, while statements (vi) is incorrect. Therefore, the correct answer is option C: Only (vi).
Explanation:
(i) Each actin (thin filament) is made of 2F (filamentous) actins.
This statement is correct. Actin filaments are composed of two strands of filamentous (F) actin molecules that are twisted together.
(ii) F-actin is the polymer of G (globular) actin.
This statement is correct. F-actin is a polymer formed by the polymerization of globular (G) actin molecules.
(iii) 2F-actins are twisted into a helix.
This statement is correct. Two strands of F-actin molecules are twisted together to form a helical structure.
(iv) Two strands of tropomyosin (protein) lie in the grooves of F-actin.
This statement is correct. Tropomyosin molecules lie in the grooves of F-actin and regulate the interaction between actin and myosin.
(v) Troponin molecules (complex proteins) are distributed at regular intervals on the tropomyosin.
This statement is correct. Troponin molecules are complex proteins that are distributed at regular intervals along the length of the tropomyosin strand.
(vi) Troponin forms the head of the myosin molecule.
This statement is incorrect. Troponin does not form the head of the myosin molecule. The head of the myosin molecule is a separate protein structure.
(vii) The myosin is a polymerized protein.
This statement is correct. Myosin is a polymerized protein made up of multiple subunits that form the thick filament in myofibrils.
Overall, statements (i), (ii), (iii), (iv), (vii) are correct, while statements (vi) is incorrect. Therefore, the correct answer is option C: Only (vi).
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Which of the following statements about the molecular arrangement of actin and myosin in myofibrils is/are incorrect?(i) Each actin (thin filament) is made of 2F (filamentous) actins.(ii) F-actin is the polymer of G (globular) actin.(iii) 2F-actins are twisted into a helix.(iv) Two strands of tropomyosin (protein) lie in the grooves of F-actin.(v) Troponin molecules (complex proteins) are distributed at regular intervals on the tropomyosin.(vi) Troponin forms the head of the myosin molecule.(vii) The myosin is a polymerised protein.a)(i), (iii) and (vii)b)(ii), (iv) and (v)c)Only (vi)d)Only (iii)Correct answer is option 'C'. Can you explain this answer?
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Which of the following statements about the molecular arrangement of actin and myosin in myofibrils is/are incorrect?(i) Each actin (thin filament) is made of 2F (filamentous) actins.(ii) F-actin is the polymer of G (globular) actin.(iii) 2F-actins are twisted into a helix.(iv) Two strands of tropomyosin (protein) lie in the grooves of F-actin.(v) Troponin molecules (complex proteins) are distributed at regular intervals on the tropomyosin.(vi) Troponin forms the head of the myosin molecule.(vii) The myosin is a polymerised protein.a)(i), (iii) and (vii)b)(ii), (iv) and (v)c)Only (vi)d)Only (iii)Correct answer is option 'C'. Can you explain this answer? for NEET 2024 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about Which of the following statements about the molecular arrangement of actin and myosin in myofibrils is/are incorrect?(i) Each actin (thin filament) is made of 2F (filamentous) actins.(ii) F-actin is the polymer of G (globular) actin.(iii) 2F-actins are twisted into a helix.(iv) Two strands of tropomyosin (protein) lie in the grooves of F-actin.(v) Troponin molecules (complex proteins) are distributed at regular intervals on the tropomyosin.(vi) Troponin forms the head of the myosin molecule.(vii) The myosin is a polymerised protein.a)(i), (iii) and (vii)b)(ii), (iv) and (v)c)Only (vi)d)Only (iii)Correct answer is option 'C'. Can you explain this answer? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which of the following statements about the molecular arrangement of actin and myosin in myofibrils is/are incorrect?(i) Each actin (thin filament) is made of 2F (filamentous) actins.(ii) F-actin is the polymer of G (globular) actin.(iii) 2F-actins are twisted into a helix.(iv) Two strands of tropomyosin (protein) lie in the grooves of F-actin.(v) Troponin molecules (complex proteins) are distributed at regular intervals on the tropomyosin.(vi) Troponin forms the head of the myosin molecule.(vii) The myosin is a polymerised protein.a)(i), (iii) and (vii)b)(ii), (iv) and (v)c)Only (vi)d)Only (iii)Correct answer is option 'C'. Can you explain this answer?.
Which of the following statements about the molecular arrangement of actin and myosin in myofibrils is/are incorrect?(i) Each actin (thin filament) is made of 2F (filamentous) actins.(ii) F-actin is the polymer of G (globular) actin.(iii) 2F-actins are twisted into a helix.(iv) Two strands of tropomyosin (protein) lie in the grooves of F-actin.(v) Troponin molecules (complex proteins) are distributed at regular intervals on the tropomyosin.(vi) Troponin forms the head of the myosin molecule.(vii) The myosin is a polymerised protein.a)(i), (iii) and (vii)b)(ii), (iv) and (v)c)Only (vi)d)Only (iii)Correct answer is option 'C'. Can you explain this answer? for NEET 2024 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about Which of the following statements about the molecular arrangement of actin and myosin in myofibrils is/are incorrect?(i) Each actin (thin filament) is made of 2F (filamentous) actins.(ii) F-actin is the polymer of G (globular) actin.(iii) 2F-actins are twisted into a helix.(iv) Two strands of tropomyosin (protein) lie in the grooves of F-actin.(v) Troponin molecules (complex proteins) are distributed at regular intervals on the tropomyosin.(vi) Troponin forms the head of the myosin molecule.(vii) The myosin is a polymerised protein.a)(i), (iii) and (vii)b)(ii), (iv) and (v)c)Only (vi)d)Only (iii)Correct answer is option 'C'. Can you explain this answer? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which of the following statements about the molecular arrangement of actin and myosin in myofibrils is/are incorrect?(i) Each actin (thin filament) is made of 2F (filamentous) actins.(ii) F-actin is the polymer of G (globular) actin.(iii) 2F-actins are twisted into a helix.(iv) Two strands of tropomyosin (protein) lie in the grooves of F-actin.(v) Troponin molecules (complex proteins) are distributed at regular intervals on the tropomyosin.(vi) Troponin forms the head of the myosin molecule.(vii) The myosin is a polymerised protein.a)(i), (iii) and (vii)b)(ii), (iv) and (v)c)Only (vi)d)Only (iii)Correct answer is option 'C'. Can you explain this answer?.
Solutions for Which of the following statements about the molecular arrangement of actin and myosin in myofibrils is/are incorrect?(i) Each actin (thin filament) is made of 2F (filamentous) actins.(ii) F-actin is the polymer of G (globular) actin.(iii) 2F-actins are twisted into a helix.(iv) Two strands of tropomyosin (protein) lie in the grooves of F-actin.(v) Troponin molecules (complex proteins) are distributed at regular intervals on the tropomyosin.(vi) Troponin forms the head of the myosin molecule.(vii) The myosin is a polymerised protein.a)(i), (iii) and (vii)b)(ii), (iv) and (v)c)Only (vi)d)Only (iii)Correct answer is option 'C'. Can you explain this answer? in English & in Hindi are available as part of our courses for NEET.
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Here you can find the meaning of Which of the following statements about the molecular arrangement of actin and myosin in myofibrils is/are incorrect?(i) Each actin (thin filament) is made of 2F (filamentous) actins.(ii) F-actin is the polymer of G (globular) actin.(iii) 2F-actins are twisted into a helix.(iv) Two strands of tropomyosin (protein) lie in the grooves of F-actin.(v) Troponin molecules (complex proteins) are distributed at regular intervals on the tropomyosin.(vi) Troponin forms the head of the myosin molecule.(vii) The myosin is a polymerised protein.a)(i), (iii) and (vii)b)(ii), (iv) and (v)c)Only (vi)d)Only (iii)Correct answer is option 'C'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of
Which of the following statements about the molecular arrangement of actin and myosin in myofibrils is/are incorrect?(i) Each actin (thin filament) is made of 2F (filamentous) actins.(ii) F-actin is the polymer of G (globular) actin.(iii) 2F-actins are twisted into a helix.(iv) Two strands of tropomyosin (protein) lie in the grooves of F-actin.(v) Troponin molecules (complex proteins) are distributed at regular intervals on the tropomyosin.(vi) Troponin forms the head of the myosin molecule.(vii) The myosin is a polymerised protein.a)(i), (iii) and (vii)b)(ii), (iv) and (v)c)Only (vi)d)Only (iii)Correct answer is option 'C'. Can you explain this answer?, a detailed solution for Which of the following statements about the molecular arrangement of actin and myosin in myofibrils is/are incorrect?(i) Each actin (thin filament) is made of 2F (filamentous) actins.(ii) F-actin is the polymer of G (globular) actin.(iii) 2F-actins are twisted into a helix.(iv) Two strands of tropomyosin (protein) lie in the grooves of F-actin.(v) Troponin molecules (complex proteins) are distributed at regular intervals on the tropomyosin.(vi) Troponin forms the head of the myosin molecule.(vii) The myosin is a polymerised protein.a)(i), (iii) and (vii)b)(ii), (iv) and (v)c)Only (vi)d)Only (iii)Correct answer is option 'C'. Can you explain this answer? has been provided alongside types of Which of the following statements about the molecular arrangement of actin and myosin in myofibrils is/are incorrect?(i) Each actin (thin filament) is made of 2F (filamentous) actins.(ii) F-actin is the polymer of G (globular) actin.(iii) 2F-actins are twisted into a helix.(iv) Two strands of tropomyosin (protein) lie in the grooves of F-actin.(v) Troponin molecules (complex proteins) are distributed at regular intervals on the tropomyosin.(vi) Troponin forms the head of the myosin molecule.(vii) The myosin is a polymerised protein.a)(i), (iii) and (vii)b)(ii), (iv) and (v)c)Only (vi)d)Only (iii)Correct answer is option 'C'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice Which of the following statements about the molecular arrangement of actin and myosin in myofibrils is/are incorrect?(i) Each actin (thin filament) is made of 2F (filamentous) actins.(ii) F-actin is the polymer of G (globular) actin.(iii) 2F-actins are twisted into a helix.(iv) Two strands of tropomyosin (protein) lie in the grooves of F-actin.(v) Troponin molecules (complex proteins) are distributed at regular intervals on the tropomyosin.(vi) Troponin forms the head of the myosin molecule.(vii) The myosin is a polymerised protein.a)(i), (iii) and (vii)b)(ii), (iv) and (v)c)Only (vi)d)Only (iii)Correct answer is option 'C'. Can you explain this answer? tests, examples and also practice NEET tests.
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