Learn about DNA: The Cell's Life Pattern in this educational video from dizzo95.
Read the full transcript »
Male Speaker: Deoxyribonucleic acid or DNA access a code for a cells life pattern. Its structure is customarily illustrated in two forms, actually molecular structure, and diagrammatic representation, within each molecule, 2 interwoven twisted strands shown here in grey or held together by linkages shown in red. To form a spiral ladder the double helix, the diagram shows first that each strand is composed of alternating deoxyribose sugar, shown in orange hence phosphate molecules represented in purple, attach to each sugar, a molecules called basis, out which there are only 4 types found in DNA. Here they are designated as red, blue, green or yellow, the paring of specific basis red with yellow, blue with green, form the rounds of the ladder. The DNA code consists of a sequence of triplets of basis on one strand, each triplet codes for an amino acid and during protein synthesis amino acids are joint together, any change in the sequence of triplets changes the protein that is produced. As all chemical reactions within the cells are controlled by the action of a group of proteins the enzymes the DNA code regulates cell activity.
Copyright © 2005 - 2014 Healthline Networks, Inc. All rights reserved for Healthline.