Protein or the physical region of the protein that participates in chemical catalysis. In solution proteins also undergo variation in structure through thermal vibration and the collision with other molecules. Proteins can be informally divided into three main classes, which correlate with typical tertiary structures: globular proteins, fibrous proteins, and membrane proteins. Almost all globular proteins are soluble and many are enzymes. Fibrous proteins are often structural, such as collagen, the major component of connective tissue, or keratin, the protein component of hair and nails. Membrane proteins often serve as receptors or provide channels for polar or charged molecules to pass
The Origin of Species (The Outer Limits) next sentient species to arise could suffer the same fate, they built the ship to save a sample of that race before it wiped itself out, and protect it until it could repopulate the Earth. The ship extracted genetic material from the group students (and Hope) during the journey and created babies (modifying their genetics to avoid the dangers of inbreeding), creating a sufficient number of humans with enough genetic variation to repopulate the Earth. The Origin of Species (The Outer Limits) "The Origin of Species" is an episode of "The Outer Limits" television show. It was first broadcast on