Tropmyosin and Troponin are called the regulatory proteins in muscle contraction. Describe the myofibril organization and specific structural and functional role of these two proteins in muscle contraction-relaxation cycle.

Q: Explain the molecular mechanism of muscle contraction.

A: Introduction: The myofibrils are made of parallel bundles of protein microfilaments referred to as…

Q: Match each protein with the appropraite myofilament

A: The sliding filament model, developed by Hugh Huxley and Jean Hanson and Andrew Huxley and Ralph…

Q: How fast could a non-muscle cell make a contraction compared to a muscle cell if the relative rates…

A: In muscle contraction, actin filaments are associated with myosin filaments to perform various kinds…

Q: Please answer the following question Thankyou!! 1.) Which of the following factors oppose (s)…

A: Note-Hi! Thank you for the question, As per the honor code, we are allowed to answer one question at…

Q: Discuss the All or None Law of Muscle contraction.

A: The tightening, decreasing, or lengthening of muscles during an activity is known as muscular…

Q: Hill's equation gives a relation between muscle contraction rates νν and muscle tension TT…

A: We have to rewrite the equation in a form to show that T is dependent on v including T0, alpha and…

Q: Identify the nature and physiological significance of the series-elastic component of muscle…

A: The muscle fibers are surrounded by a membrane called sarcolemma. There are two types of myofibrils…

Q: What are the three functional types of proteins found in a myofibril?

A: A muscle fiber is made of many Myofibril and myofibrils are made of many myofilaments. Myofibrils…

Q: At the level of the sarcomere, explain the sliding filament model for how muscle contracts

A: Muscle contraction and relaxation is one of the main reasons that aid the movement or locomotion of…

Q: Discuss about Ca2+-dependent thin-filament regulation of skel-etal muscle contraction.

A: Movement of skeletal muscle in mammalians show large variability in its functions with their…

Q: Select the correct statements regarding myosin-mediated contraction in the sarcomere. Ca2+ is…

A: Actin and myosin work together to produce muscle contractions and, therefore, movement.

Q: What is the role of ATP and ATP hydrolysis in the cycle of actin-myosin association and…

A: ATP (adenosine triphosphate) and ATP hydrolysis play crucial roles in the cycle of actin-myosin…

Q: Describe the structure of the sarcomere and explain how it enables muscle contraction according to…

A: Answer- The sarcomere is the functional unit of the muscle and it has the central role in the muscle…

Q: Briefly discuss the abundance of sarcoplasmic reticulum in skeletal muscle in relation to its…

A: The sarcoplasmic reticulum is the major intracellular organelle for controlling the cytosolic…

Q: What two types of microfilament make up the muscle sarcomere?  Which motor protein is primarily…

A: Filaments are long, thin and flexible structures that can be found in various biological systems.…

Q: the process of muscle contraction, which of the following steps immediately precedes the influx of…

A: Muscle contraction:-  Is the response  a muscle has to any kind of stimuli where the result is…

Q: Describe three ways in which ATP is regenerated during skeletal muscle contraction.

A: The relaxation and contraction of the muscle fiber are due to a linking of the muscle fibers namely…

Q: Myofibis in muscle fibres are made up of repeating units of dark and light bonds called

A: Myofibril is a muscle cell that is shaped like a rod. Many chains of Myofibril bound together to…

Q: What structures/s is/are responsible for the banding pattern in skeletal muscle cells? (EXPLAIN)…

A: Striated muscles are generally voluntary muscles that are under the conscious control of brain.…

Q: Label the structures of the myofibril model shown with overlying sarcoplasmic reticulum. Transverse…

A: Muscular system is a type of body system which is involved in contraction and relaxation so as to…

Q: What is the difference between a myofilament and a myofibril?

A: The muscle is a soft tissue that is highly specialized in creating stress, resulting in strength…

Q: List five proteins of the myofilaments and describe their physical arrangement.

A: The myofilaments are the proteins that make up the contractile elements of muscle cells. There are…

Q: Describe the length-tension relationship in skeletal muscle fibers.

A: The skeleton muscle varies in shape, size, and arrangement of fibers. These range from small strands…

Q: Briefly explain ultrastructrure of myofibril.

A: The human skeletal muscles are made up of many muscle bundles or fascicles. Different muscle bundles…

Q: Describe the microscopic structure of a skeletal muscle fiber and the arrangement of its contractile…

A: Muscular tissues consist of fibers called muscle fibers that help in the contraction of muscles. On…

Q: Compare and contrast myofibrils and myofilaments.

A: Muscles are required in breathing, talking, running, walking, and anybody movement. Actin and…

Q: Describe four muscle proteins and their functions.

A: We can say that Muscle contraction can be described as the process occurring within the muscle…

Q: As skeletal muscle shortens with contraction, the length of the I band remains constant as the…

A: Muscle contraction is defined as the process of stimulation of tension generation sites present…

Q: Describe in details the biochemical and mechanochemical series of events that enables motor neurons…

A: Muscle contraction means activation of tension-generating sites within our muscle cells and the…

Q: Discuss why fast glycolytic fibers develop more force than slow oxidative fibers.

A: Muscle tissue is a specialized tissue found in animals which allows movement. Muscle tissue consists…

Q: v a two-state model of a muscle sarcomere - representing relaxed and contracted forms. are your…

A: Muscle fibre consists of A and I bands. These bands are formed due to the regular parallel and…

Q: An individual "step" by a myosin head in one cycle pulls the thin filament about 15 nm. How many…

A: To find the number of steps each actin filament/fibre must make in one contraction, you need the…

Q: Thick and thin myofilaments have different properties. For each phrase below, indicate whether the…

A: Myofilaments are the parallel striated muscle cells or muscle fibres that constitute the fasicles…

Q: Describe the protein structures involved in muscle contraction.

A: Every skeletal muscle is composed of myofibrils. These myofibrils are composed of myofilaments. The…

Q: Epimysium Myosin Myofibril Muscle fiber Tendon D www Dece

A: 1)  Epimysium :Definition and Composition:Epimysium is the outermost layer of connective tissue…