Which is not a protein found in thin filaments? a. Tropomyosin b. Actin c. Troponin d. Myosin e. No exceptions; all are found in thin filaments.

Q: What is the role of ATP in muscle function? a. ATP provides energy that enables myosin to form cross…

A: ATP stands for adenosine triphosphate. It is an energy coin of the cell. It is produced in the…

Q: Contraction of sarcomeres is dependent upon the motor protein attached to and moving along

A: The germ layer, mesoderm, is the source of soft tissue called muscles. Connective tissue is…

Q: muscle cells are made up of? A. Z bars b. actin c. myosin d. myofibrils

A: Muscles are soft tissues found in most of the animals. Functions of muscles are to produce motion…

Q: This player in smooth muscle contraction is analogous to troponin in skeletal and cardiac muscle…

A: The muscular system is one of the major organ systems in the body. It contains three forms of…

Q: Skeletal muscle cells are a. large multinucleate cells that arise by growth. b. large…

A: The skeletal muscle represents one of the major types of muscle tissue, consisting of thousands of…

Q: A thick filament is made up of Select one: a. myosin and regulatory filaments b. actin and…

A: Muscular contraction is caused by the interaction between actin and myosin as they temporarily bind…

Q: Which of the following is a component of the neuromuscular junction? a. axon terminal of a somatic…

A: The muscles contract and relax to enable various movements. The contraction and the relaxation of…

Q: A mutation has occurred that prevents ATP from binding from the heads of myosin. What impact would…

A: Mutation is defined as any sudden change in the nucleotide sequence of genes. It may also be defined…

Q: Within the first few seconds of a 5-minute race, stored ATP isdepleted. How do muscles obtain energy…

A: Respiration is the development of oxygen from the external climate to the cells inside tissues, and…

Q: Which of the following statements is True?a. Tendons contract using the sliding filament…

A: The muscular-skeletal system made up of tendons, ligaments, bones, muscles of various types. The…

Q: At low intracellular Ca2+ concentration, _________________ the active sites on the thin actin…

A: Muscular system is one of the body system which aids in contraction and relaxation of muscle so that…

Q: Actin and myosin are long-filament proteins used in the contraction of muscles. They are examples of…

A: Proteins are polypeptide molecules that are made up of amino acids. Amino acids are organic…

Q: ACh receptors are found in:- a. synaptic vesicles. b. terminal cisternae. c. thick filaments. d.…

A: Acetylcholine is a neurotransmitter in the body that is principally responsible for the relaxation…

Q: Which characteristic or component is NOT shared by skeletal muscle and cardiac muscle? I. Electrical…

A: There are three types of muscles in the body. Smooth muscles and cardiac muscles are involuntary…

Q: The function of ATP during muscle contraction is toa. cause an allosteric change in myosin so it…

A: ATP(adenosine triphosphate) causes an allosteric change on myosin so it detaches from actin and…

Q: Movement of sarcomeres is dependent upon the motor protein ______ attached to and moving along…

A: The smallest functional unit of a striated muscle tissue is called a sarcomere. The muscle fiber is…

Q: Calcium ions are responsible for unmasking of active site on which protein for cross bridge activity…

A: The muscle fibers contain sarcomeres that are the structural units responsible for muscle…

Q: What is released when myosin heads attach to actin filaments A. Phosphate B. ATP C. ADP D.…

A: Myosin and actin filaments are two proteins that help muscles contract. Myosin is a motor protein…

Q: Which cell type helps to repair injured muscle fibers?a. ganglion cellsb. myotube cellsc. myoblast…

A: Muscle fibers, or muscle cells, are formed when the developmental myoblasts fuses together, this…

Q: Which of the following is true concerning the role of Calcium in the contraction of muscle- cells?…

A: A muscle is a smooth tissue in animals. On the basis of structure, contractile properties and…

Q: Which of the following thin filament structures directly interacts with the myosin heads to form a…

A: The mechanism of contraction of skeletal muscle was best explained through - "sliding filament…

Q: During which phase of the crossbridge cycle is ATP split into ADP and Pi? A. Immediately preceding…

A: Cross bridge cycling refers specifically to the action of the cross-bridge, that being the head and…

Q: Skeletal muscle cells are a. large multinucleate cells that arise by growth. b. large multinucleate…

A: The skeletal muscle represents one of the major types of muscle tissue, consisting of thousands of…

Q: The binding of calcium to troponin will directly cause A. the hydrolysis of ATP B. the binding of…

A: Calcium ions and actin binding proteins play an important role in muscle contraction and relaxation.…

Q: What might happen if skeletal muscle lacked tropomyosin?   A. The striation pattern would…

A: Myogenesis is the process of formation of muscles from the mesodermal layer of embryonic germ cells.…

Q: Choose the best description of how myosin and actin are arranged within the two types of protein…

A: In order to facilitate movement, muscles are attached to bones. They function by shortening…

Q: Which of the following statements correctly describes properties associated with the development of…

A: Skeletal muscle tissue's major function is to move the body by pushing on the skeleton's bones,…

Q: The action potential of skeletal muscle                 A. is not essential for contraction.…

A: Skeletal muscle fibers are cylindrical, multinucleated, striated, and under voluntary control.

Q: When ADP and Pi are bound to myosin in the cross-bridge cycle... (MULTIPLE SELECT) A. There is no…

A: The cross-bridge cycle of muscle contraction is the process in which the actin filament and myosin…

Q: Which statement about the diagram is not correct??  A. The diagram enlarged one myofibril B. This…

A: The muscle fibers are multi-nucleated (exclusively in the case of skeletal muscle fibers),…

Q: As ADP and Ⓟ are released from a myosin head,a. actin filaments move toward the H band.b. a…

A: During muscles contraction, energy for the movement of myosin head is obtained by the breakdown of…

Q: 17. Which of the following properties of the structure of skeletal muscle is not true?   A.…

A: The skeletal muscles or voluntary muscles are attached to bones and are involved in locomotion.

Q: What happens when myosin filaments hydrolyze ATP molecules in muscles?    a. Actin–myosin complexes…

A: The specialised cytoplasm of a muscle fiber is called sarcoplasm which contain fine thread like…

Q: 51- are links between the Filamentous F-actin of thin filaments and myosin heads of thick filaments.…

A: Introduction Muscle contraction is the activation of tension-generating sites within muscle cells,…

Q: Which is most accurate with regard to the phrase "muscle fiber"? A. Muscle fibers technically only…

A: The living organism’s body is comprised of several muscles that show varying roles based on their…

Q: Dark areas called _____ made of proteins are where actin filaments attach within a myofibril.  A. Z…

A: The muscles with alternate light and dark bands which remain associated with skeleton and can…