Answer:
What amino acids do is aid growth, cell replacement, and cell and tissue repair.
Explanation:
Amino acids are the units that make up the structure of proteins, necessary for the structure and function of living beings.
Due to the structural function of proteins —capable of forming tissues such as muscle and collagen that are present throughout the body— it can be said that <u>amino acids contribute to growth and development. In addition, amino acids and proteins can assist in cell renewal and repair of cells and tissues</u>.
The other options do not correspond to functions of the amino acids:
- <u><em>Help the body use certain vitamins and create cell energy </em></u><em>is a function of the lipids.
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- <u><em>Provide energy and help cells get energy from other nutrients</em></u><em> is a function of carbohydrates.
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- <u><em>Turn carbohydrates into proteins, fats, and fatty acids</em></u><em> is not a amino acid function.</em>
Answer: D. Contractility of the heart muscle refers to the force of contraction that this muscle can exert.
Explanation:
The myocardial contractility is ability of the heart muscles to contract. This is achieved by the forces which develop between the contracting muscles caused by the filaments of actin and myosin.
The degree of binding of the muscle filaments dependents upon the calcium ion concentration. These actions are controlled in vivo by the sympathetic nervous system. It is driven by the release of the catecholamine, which is a process which determines the calcium ion concentration inside the cytosol of the muscles of the heart.
Answer:
Explanation:
Friction is the force needed to stop an object in motion
