Whether or not the fatty acid has double or single covalent bonds
a fatty acid is saturated when only single bonds to H hold it together
a fatty acid is unsaturated when a double bond helps hold it together, this type of fatty acid becomes bent as a result
Parenteral route
injecting a drug into the body, includes intradermal, SQ, IM, IV routes. Drugs given IV route produce the most rapid actions because they are given directly into the bloodstream.
Cnidarians were the first phylum that scientists saw tissue level organization in. Tissue level organization meaning cells all of one type start to function in a unified way.
<span>There are three major types of blood vessels: the arteries, which carry the blood away from the heart; the capillaries, which enable the actual exchange of water and chemicals between the blood and the tissues; and the veins, which carry blood from the capillaries back toward the heart</span>
Photosynthesis.. hope I helped (:
