Home > Where We Work > Regions > North America > United States > Rhode Island > Places We Protect > Visit Block Island in Rhode Island. Because of the hard work of many individuals, and an assembly of conservation organizations, over 43% of Block Island is protected for plants, animals, and people. Â© The Nature Conservancy.
Pharmacologists study the actions of drugs in the intestinal tract, the brain, the muscles, and the liver-just a few of the most common areas where drugs travel during their stay in the body. Of course, all of our organs are constructed from cells, and inside all of our cells are genes.
The long chains of amino acids fold to give each type of protein molecule a specific shape. Proteins act as: 1  Structural components of tissues (such as muscles). 2  Hormones (such as insulin). 3  Antibodies (part of the body's immune system). 4  Biological catalysts (enzymes).