Answer: d. proteins are made of amino acids, vitamins, and minerals
Proteins are biomolecules that are found in all living things. They are made up of long chains of amino acids. The long chain exhibit specific amino acids, which makes up a typical protein molecule. Hence, proteins can be distinguished based upon the amino acid composition. Vitamins and minerals are not the components of proteins because they are another class of biomolecules.
C two identical daughter cells.
Plants have two systems for the transportation of substances<span> - using two different types of transport tissue. </span>Xylem<span> transports water and solutes from the roots to the leaves, while </span>phloem<span> transports food from the leaves to the rest of the plant.</span>
Rowdy-rude,rough,wild
Disorderly-disorganized,confused, irregular, cluttered, etc.
Answer:
in the wall of the right atrium of the heart.
Explanation:
The sinoatrial node (SA), consisting of spindle-shaped cells, initiates the electrical activity of the heart. From its location in the right atrium in proximity to the superior vena cava, the electrical activity spreads to the atria, whose cells are larger than those of the SA.