BIOL 1001 Chapter : Textbook Notes-Chapter 3
Document Summary
In chem, organic=describes molecules that have a carbon skeleton bonded to some h atoms: derived from ability of living organisms to synth & use this gen type of molecule. Though a complex molecule could be made by combining atom after atom following an extremely detailed blueprint, life takes a modular approach, preassembling smaller molecules & hooking them together. Section 3: what are carbohydrates: carbohydrate molecules composed of c, h, & o in approx. ratio of 1:2:1, means c + water , all are either small, water-soluble sugars or polymers of sugar, such as starch. Ecologists estimate about 1 trillion tons are synth by organisms each yr, making it the most abundant organic molecule on earth. Like starch, is a polymer of glucose, but in cellulose, unlike starch, every other glucose is upside down . Though most animals can easily digest starch, no vertebrates have enzymes that can break down cellulose.
