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What is the primary energy transferring molecule in cells quizlet?

What is the primary energy-transferring molecule in cells? When broken (hydrolyzed), the high-energy phosphate bonds in the ATP molecule release the energy used to do cellular work.

What is the primary function of molecule B?

Which of the following is a primary function of molecule B? energy storage: The hydrocarbon groups that dominate the structure of triglycerides are the basis for the efficient and compact energy storage by fat.

What are the two fundamental roles of DNA?

DNA serves two important cellular functions: It is the genetic material passed from parent to offspring and it serves as the information to direct and regulate the construction of the proteins necessary for the cell to perform all of its functions.

What functional group pairs allows amino acids to bond with another?

amine group

What is the most significant factor in the formation of a covalent bond?

What is the most significant factor in the formation of a covalent bond? Covalent bonds are formed by the sharing of electrons between two reactive atoms.

What is referred to as the primary level of protein structure?

Primary structure. The simplest level of protein structure, primary structure, is simply the sequence of amino acids in a polypeptide chain. For example, the hormone insulin has two polypeptide chains, A and B, shown in diagram below.

What is the primary purpose of protein?

Protein has many roles in your body. It helps repair and build your body’s tissues, allows metabolic reactions to take place and coordinates bodily functions. In addition to providing your body with a structural framework, proteins also maintain proper pH and fluid balance.

What are the contractile proteins?

The contractile proteins are myosin, the principal component of thick myofilaments, and actin, which is the principal component of thin myofilaments.

Where do we find contractile proteins?

Contractile proteins are proteins that mediate sliding of contractile fibres (contraction) of a cell’s cytoskeleton, and of cardiac and skeletal muscle.

What are the 2 main proteins in muscle cells?

Tropomyosin and troponin are two main proteins that regulate muscle contraction and relaxation (Choi and Kim, 2009; Zot and Potter, 1987).

Which type of protein is found in muscles?

The muscle proteins can be divided in to contratile, regulatory, sarcoplasmic and extracellular forms. The most important are the contractile proteins actin and myosin. Among the regulatory proteins, troponin, tropomyosin, M-protein, beta-actin, gamma-actin and C-protein are great importance.

What are four proteins associated with Myofibrils?

Myofibrils constitute the contractile system, which consists of four complex proteins: myosin, actin, tropomyosin, and troponin.

What two proteins make up Myofibrils?

The myofibrils are made up of thick and thin myofilaments, which help give the muscle its striped appearance. The thick filaments are composed of myosin, and the thin filaments are predominantly actin, along with two other muscle proteins, tropomyosin and troponin.

How are Myofibrils formed?

Myofibrils are composed of long proteins including actin, myosin, and titin, and other proteins that hold them together. These proteins are organized into thick and thin filaments called myofilaments, which repeat along the length of the myofibril in sections called sarcomeres.