Friday, July 30, 2010
NUCLEIC ACIDS and LIPIDS
Nucleic acids are polymer that gives information in a cell. The two major types are DNA and RNA. DNA is a genetic material determining while RNA is mainly on protein synthesis. It has 3 parts the five carbon simple sugar molecule, phosphate group and the nitrogenous base. nucleic acids has 5 base pairs adenine, guanine, thymine, cytosine and uracil. Lipids is also called fats but it is not a polymer, they are insoluble in water but soluble in alcohol and has less O. Lipids can be simple or complex depending on the presence of fatty acid. Complex lipids are further divided into four types waxes, acylglycerol, phosphoglyceride and sphingolipids. Simple lipids are also divided into 3 types terpenes, steroids and prostaglandins.
Friday, July 23, 2010
PROTEINS( AMINO ACIDS )
Proteins like carbohydrates are polymer that is composed of monomer that is amino acid. Molecular structures of proteins differ only in their R group. As you can notice alanine and valine differ only in the H of alanine. Protein can be an enzyme which helps us digest food more faster. You will know if it is an enzyme if it has a suffix -ase, like maltase which digests maltose. Protein can also exist as a hormone which is released in our endocrine glands, hormones send messages that has to do something with our body.
CARBOHYDRATES
Carbohydrates is one of the most important organic molecules in our body. It is a polymer which means it is made up of many building blocks called monomers. Carbohydrates are usually classified as L and D, they depend to the second to the last carbon. Carbohydrates has three types, monosaccharides, disaccharides and polysaccharides. Monosaccharides are the simplest form of carbohydrates. Disaccharides are composed of two monosaccharides while polysaccharides is composed of three or more monosaccharide.
Saturday, July 17, 2010
ANTOMICAL TERMS
IN Biology, there are many anatomical terms used for describing and telling what is wrong with our body. All terms used in biology came from Latin words for example,. cardi/o means heart or has something to do with the heart. Every part of our body has its own term that is used for easier detection of any complications in our body system. the body is also has sections like the transverse, saggital and the coronal section, they are divide the body into medial and lateral, superior and inferior, and anterior and posterior.
Subscribe to:
Posts (Atom)