In the past, scientists believed that DNA was stored in proteins. Today we know that this is not true. The DNA is stored in the cell nucleus.
Proteins have an extensive list of functions in the body and are found in all cell structures, interstitial substances, antibodies, among others. Among the functions that can be attributed to proteins, its role in transporting oxygen (hemoglobin), in protecting the body against pathogenic organisms (antibodies), as a catalyst for chemical reactions (enzymes), membrane receptor, acting in contraction muscle (actin and myosin), besides being fundamental for the growth and formation of hormones.
Cells make up the smallest level of a living organism such as yourself and other living things. The cellular level of an organism is where the metabolic processes occur that keep the organism alive. That is why the cell is called the fundamental unit of life.
Eukaryotic cells do not have a nucleus. The nucleus is where DNA, your genetic material, is usually stored. Prokaryotic cells do not have a nucleus. The DNA just floats around the cell instead of staying in one designated area.
A molecule is a group of two or more atoms held together by chemical bonds. A compound is a substance which is formed by two or more different types of elements which are united chemically in a fixed proportion. All molecules are not compounds. All compounds are molecules.
