Rheumatoid Arthritis Symptoms In Women. Disorder that is believed to result from an autoimmune process in which the body's immune system attacks itself. It is a system-wide disease that usually last for many years. In some patients, RA affects such organs as the heart, lungs, and eyes.
The first organic molecules formed about 4 billion years ago. This may have happened when lightning sparked chemical reactions in Earthâs early atmosphere. RNA may have been the first organic molecule to form as well as the basis of early life. Explore More Use the time slider in this resource to answer the questions that follow.
A DNA molecule is made up of deoxyribose sugar while RNA is made up of ribose sugar. A DNA molecule is double stranded whilst a RNA molecule is single stranded. A DNA molecule only contains the bases; Adenine, Thymine, Cytosine and Guanine.However a RNA molecule contains the bases; Uracil, Thymine, Cytosine and Guanine. DNA is only found in the nucleus of a cell, while RNA is found in the cytoplasm.owever a RNA molecule contains the bases; Uracil, Thymine, Cytosine and Guanine. DNA is only found in the nucleus of a cell, while RNA is found in the cytoplasm.