<span>Prokaryotes is the answer</span>
Diffusion is important to organisms because it is the process by which useful molecules enter the body cellsand waste products are removed. Digested food molecules (amino acids, glucose) move down a concentration gradient from the intestine to the blood.
One type of atom, such as hydrogen is called an element. An element is a pure substance, made up of only one type of atom. You can find the elements on the periodic table of elements, where they are listed.
<span>Patients will not have to wait endlessly for suitable organ donors.
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