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Sarcomeres are the tiny contractile units linked together on a myofibril. They are the functional units of muscle tissue and are responsible for muscle contractions. Sarcomeres consist of thick and thin filaments made of proteins that slide past each other during muscle contraction.
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What is the smallest polysaccharide?
The smallest polysaccharide is maltose, which consists of two glucose units linked together.
Are Polymers molecules made from repeating units of identical organic compounds that are linked together by hydrogen bonds?
False, they are by covalent bonds
Long filamentous organelle with a banded appearance?
This description matches a structure called a myofibril, which is found in muscle cells. Myofibrils are made up of repeating units called sarcomeres that give them a banded appearance. They are responsible for muscle contractions by interacting with motor proteins.
Which of the following molecules link together to form starch?
Glucose Glucose units come together to form large cellulose and starch molecules.
Which organic molecules are composed of monosaccharide monomers?
Carbohydrates are the organic molecules composed of monosaccharide monomers. Monosaccharides are single sugar units that can be linked together to form larger carbohydrate molecules such as disaccharides (two monosaccharides linked together) and polysaccharides (long chains of monosaccharides).
What is the segment of a myofibril between two Z-lines?
sarcomereThe contractile units are called sarcomeres.
What is one of the functional units of a myofibril?
sarcomere
What is each section of a myofibril called?
Each section of a myofibril is called a sarcomere. Sarcomeres are the fundamental contractile units of muscle fibers, composed of overlapping thick (myosin) and thin (actin) filaments. They are demarcated by Z lines, which anchor the thin filaments, and are responsible for muscle contraction through the sliding filament mechanism.
Is Myosin part of a myofibril?
Yes, myosin is a key component of myofibrils, which are the contractile units of muscle fibers. Myofibrils are composed of thick and thin filaments; myosin forms the thick filaments, while actin constitutes the thin filaments. Together, these filaments interact during muscle contraction, allowing for movement.
What is a cylindrical cord of protein that extends the length of the muscle fiber called?
A cylindrical cord of protein that extends the length of a muscle fiber is called a myofibril. Myofibrils are composed of repeating units called sarcomeres, which are the basic contractile units of muscle tissue. These structures contain the proteins actin and myosin, which interact to facilitate muscle contraction.
Contractile units of skeletal muscles are?
myofibrils
What is Smallest contractile units of a muscle?
Sarcomere
Muscle cells contain contractible units called?
Myofibril, composed of actin and myosin.
What is a compartment in a myofilament called?
A compartment in a myofilament is called a "sarcomere." Sarcomeres are the basic contractile units of muscle fibers, consisting of overlapping thick (myosin) and thin (actin) filaments. They are arranged end to end along the length of the myofibril, and their contraction leads to muscle shortening and force generation during movement.
What is the one of the contractile units found in skeletal muscle?
Sarcomere
What covalent compound is made up of many small repeating units linked together in a chain?
A polymer is a covalent compound made up of many small repeating units linked together in a chain. Polymers can have a wide range of properties and applications, depending on the specific type and arrangement of repeating units in the chain.
Is a bundle of parallel myofilaments within a muscle fiber?
Yes, a bundle of parallel myofilaments within a muscle fiber is known as a myofibril. Myofibrils are composed of repeating units called sarcomeres, which contain the contractile proteins actin and myosin. These structures are essential for muscle contraction, as they slide past one another to shorten the muscle fiber during contraction.
