PPT-Lesson Overview 12.2 The Structure of DNA

THINK ABOUT IT The DNA molecule must somehow specify how to assemble proteins which are needed to regulate the various functions of each cell What kind of structure could serve this purpose without varying from cell to cell. 3.3.1: Outline DNA nucleotide structure in terms of sugar (deoxyribose), base. and phosphate.. 3.3.2: State the names of the four bases in DNA.. 3.3.3: Outline how DNA nucleotides are linked together by covalent bonds. DNA Structure. The discovery of the structure. Francis Crick and James Watson. The deoxyribonucleic acid (DNA) molecule is the genetic blueprint for each cell and ultimately the blueprint that determines every characteristic of a living organism. The DNA molecule was discovered in 1951 by Francis Crick, James Watson, and Maurice Wilkins using X-ray diffraction. . By the early 1900’s it was known that the chromosomes carry the genetic (hereditary) information. Chromosomes are made up of DNA (. deoxyribose. nucleic acid). They now needed to know the structure of DNA. The bacterial chromosome is a double-stranded, circular DNA molecule associated with a small amount of protein. Eukaryotic chromosomes have linear DNA molecules associated with a large amount of protein. 7. Lactose digestions in . E. coli. begins with its hydrolysis by the enzyme . -. galactosidase. , . lacZ. , is part of a . coordinatley. regulated operon containing the genes required for lactose utilization. Which of the following figures correctly depicts the interactions at the . DNA damage DNA gets damaged a lot ! DNA damage DNA gets damaged a lot! >200,000 events/human cell/day DNA damage Occurs 2 ways 1) spontaneously 2) mutagens : damage DNA Transposons Discovered by Barbara McClintock DNA GLOW Lab A new way to investigate DNA structure. V1.1: June 2018 © Copyright by Amplyus LLC, all rights reserved We bring the study of DNA structure to your hands Patent pending DNA GLOW Lab . Copyright © Houghton Mifflin Harcourt Publishing Company. Cracking the Code. Copyright © Houghton Mifflin Harcourt Publishing Company. What is DNA?. The genetic material in cells is contained in a molecule called deoxyribonucleic acid, or . Lion. Lion!!!!. Words and Actuality. “Lion” is a word, not a real lion.. Scribbles on paper or images on a monitor or screen are not a real lion.. Scribbles . on paper or images . on . a . screen .  . Author: Michael Fenech. Affiliation: Genome Health Foundation, North Brighton, SA, 5048, Australia. Email: . mf.ghf@outlook.com. . Introduction. Life as we know it depends entirely on the capacity of cells to utilize energy and molecules in the environment for cellular function and reproduction. . Directions: Front of card write term. On back write definition and draw picture . Chromosomes. Thread-like structure made of coiled DNA. Gene. Segment of DNA that codes for a specific trait. Nucleotide. histones. (50%). Five major . histones. ; H2A, H2B, H3, H4 and H1 highly basic (. Arg. and Lys >25%). Roger Kornberg in 1974; . Chromatin. is made up of repeating units called . nucleosomes. , each containing 200 . . What is DNA?. DNA is a . Nucleic Acid in the nucleus. Polymer of . Nucleotides. Each nucleotide consists of. Deoxy. ribose (5-carbon sugar) . Phosphate group. a nitrogen-containing base. Four bases. Mitosis, Protein . Synthesis. Week 8. 9/29 . DNA Replication . 11.1. Obj. TSW demonstrate base pairing rules of DNA Replication by constructing a 2-D model of DNA with paper. . P. 68 NB. Replication Video.