In many experiments, two groups are observed: an experimental group and a control group. Ideally the two groups are identical except for a single factor. That factor is called the variable factor, and it should be the only difference between the two groups. ...
Proteins are polymers constructed of 20 different amino acids which in turn are composed of carbon, hydrogen, oxygen, nitrogen and sometimes sulfur and are combined in ways to form the protein molecules an organism needs. ... Proteins also form important bodily structures, they are the important part of the muscles that enables limbs to bend (myosin) and the heart to pump. ... Nucleic acids consist of a pentose sugar bonded to a phosphate group and to one of five different kinds of nitrogenous bases. ... The common steroid structure is the basis of the human sex hormones. ...
Ethylene Oxide Ethylene oxide is a simple cyclic ether, its structure is shown bellow. CH2 CH2 O Ethylene oxide denatures amino acids, proteins and enzymes by binding with sulphhydril, carboxyl and amino groups as shown in the reaction below. ...
