Successfully reported this slideshow.
We use your LinkedIn profile and activity data to personalize ads and to show you more relevant ads. You can change your ad preferences anytime.

Dna replication ss


Published on

Published in: Technology
  • Be the first to comment

Dna replication ss

  1. 1. DNA Replication
  2. 2. I. Nucleic Acids• Built by repeating subunits called NUCLEOTIDES• Process of DEHYDRATION synthesis chains them togetherDNA (deoxyribose nucleic acid)RNA (ribonucleic acid)
  3. 3. II. Nucleotides have 3 parts(review from Bio-A!!)A. _PHOSPHATE groupB. 5 carbon SUGARC. _NITROGEN base Phosphate Nitrogen Base 5 Carbon SugarDRAW THIS& Label it! Hydrogen Bond Outside Inside Outside
  4. 4. There are 4 Nitrogen Basesa. Adenine (A)b. Thymine (T) –DNA, Uracil (U) – RNAc. Cytosine (C)d. Guanine (G)
  5. 5. Base Pairing Rule• The bases pair up in a particular way like pieces in a puzzlea. _A-T in DNA or A-U in RNAb. _C-G in both DNA and RNA
  6. 6. III. What is DNA?• DNA shape is a double helix 1. Deoxyribose sugar and phosphate form the OUTSIDE backbone 2. Pairs of nitrogen bases form the rungs or INSIDE of helix • Two strands connected by HYDROGEN bonds
  7. 7. • Functions: –Contains the hereditary instructions to make proteins that organisms need to function
  8. 8. IV. DNA Replication• The process of copying DNA in a cellA. Once fertilization occurs and before cell division can occur, a cell must make a copy of its chromosomes so each new daughter cell gets a full set of DNA
  9. 9. B. How it works: When a cell begins to copy DNA during the S-phase1. An enzyme separates and UNZIPS the two sides of DNA2. The HYDROGEN bonds are BROKEN between the strands • DNA can be transcribed to RNA when this happens
  10. 10. 3. The DNA is read and eachcomplimentary base makesBASE PAIRS4. The REPLICATION processproduces TWO new strandsof DNA-each containing onestrand from the originalVideo