Biology Study Guide TopicsEndocrine System | Lymphatic System | Blood | Circulatory System | Skull Bones | Human Skull and Brain | Tissue Types | The Cell | DNA | Anatomy Models | Electron Transport Chain | History of Microbiology | Human Anatomy | Punnett Squares | What is Mitosis | What is Life | Macromolecules | Cellular Respiration | DNA Replication | Enzymes | Pathogenic Bacteria | Natural Selection | Punnett Squares | Transcription and Translation | Exam Notes | Viruses | Osmosis | Protists | Genetic Code | Mendelian Genetics | Meiosis | Sensory Processing | Amino Acids |
Online PresentationsBones of the Human Skull | Tissue Types | Selective and Differential Media
Classroom ActivitiesRecombinant DNA Cut And Tape Classroom Activity
Amino Acids Study Guide
1) Amino acids are the basic building blocks of proteins (also called peptides and polypeptides).
2) There are 20 different amino acids that make up the proteins in the human body (and all other organisms).
3) Amino acids have a common structure consisting of an amino group, a carboxyl group, a hydrogen atom and a side chain (R) around a central carbon atom.
4) Amino acids are mainly composed of carbon, hydrogen, oxygen and nitrogen.
5) Amino acids come in left-handed and right-handed versions. The kind found in biological proteins are left handed (or the L-sterioisomers).
6) The 20 amino acids are: glycine, alanine, valine, leucine, isoleucine, serine, thereonine, cysteine, methionine, proline, aspartic acid, asparagine, glutamic acid, glutamine, lysine, arginine, histidine, phenylalanine, tyrosine and tryptophan.