If a cross section of a sarcomere is seen, each myosin is surrounded by how many actin molecules?
Correct answer: B. 6
- A. 5
- B. 6
- C. 7
- D. 8
Explanation
The myosin filament is surrounded by six actin filaments and each actin filament is in turn surrounded by three myosin filaments. This arrangement of the actin and myosin filaments produce a striated appearance to the muscle. So, option B is the only correct answer.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
About Support and Movement
Support and movement covers the axial and appendicular skeleton, bone structure, joints and the arrangement of skeletal muscles. Muscle contraction is explained through actin, myosin, sliding filaments, calcium ions and ATP, while arthritis is distinguished as a disorder of joints rather than a normal part of movement.
Practise Support and Movement
745 free Support and Movement MCQs from Biology, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Biology questions like this
Biology is on 8 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Support and Movement questions
A smallest contractile unit of muscle contraction called sarcomere is the area between two?
Why skeletal muscles are called striated muscles?
In this question, a statement is given followed by two courses of action numbered I and II. It is required to grasp the statement, analyze the problem or policy it mentions and then decide which of the courses of action logically follow / most appropriate.Statement:The teenager was arrested by the police for taking drugs.Courses of action:I) The teenager should be meted with corporal punishment by the police.II) The teenager should be sent to a drug rehabilitation centre.
Vascular Cambium initially appears as actively dividing cells between?
Which of the following plays the major role in providing support to young herbaceous parts of the plant?
Secondary cell wall of sclerenchyma cells is impregnated with?