DNA REPLICATION - PowerPoint PPT Presentation

Loading...

PPT – DNA REPLICATION PowerPoint presentation | free to download - id: 7d07e3-MzcxN



Loading


The Adobe Flash plugin is needed to view this content

Get the plugin now

View by Category
About This Presentation
Title:

DNA REPLICATION

Description:

DNA REPLICATION SC STANDARD: B 4.3 Students will be able to explain how DNA functions as the code of life DNA REPLICATION EQ: WHAT HAPPENS DURING DNA REPLICATION THAT ... – PowerPoint PPT presentation

Number of Views:42
Avg rating:3.0/5.0
Slides: 15
Provided by: Nuge2
Learn more at: http://www.anderson1.k12.sc.us
Category:

less

Write a Comment
User Comments (0)
Transcript and Presenter's Notes

Title: DNA REPLICATION


1
DNA REPLICATION
  • SC STANDARD B 4.3 Students will be able to
    explain how DNA functions as the code of life

2
DNA REPLICATION
  • EQ WHAT HAPPENS DURING DNA REPLICATION THAT
    PREVENTS ERRORS?
  • NOTEBOOK PAGE 94

3
CHROMOSOMES
  • STRUCTURE
  • SHAPE (EUKARYOTIC CELLS ONLY)
  • COMPOSITION
  • DNA PROTEINS CALLED HISTONES

4
PROKARYOTIC DNA
  • SINGLE LOOP
  • PLASMID
  • SMALLER CIRCULAR LOOP OF FOREIGN DNA

5
DNA Replication
  • is the process of making a copy of DNA
  • 3 steps
  • strands of DNA unwind separate
  • complimentary bases added to each separate strand
  • formation of 2 identical DNA molecules
  • each has 1 strand from original 1 new strand

6
DNA Replication
  • Adding complimentary bases
  • DNA strands unwind separate

7
DNA Replication
  • 2 DNA molecules formed that are identical to the
    original DNA molecule are made up of 1 of the
    original strands (semiconservative)

8
DNA Replication
  • Replication Enzymes
  • DNA Helicase
  • an enzyme that unwinds the DNA double helix
    during DNA replication
  • DNA Polymerase
  • an enzyme that catalyzes the addition of
    complimentary bases
  • proof-reads and corrects any mismatches

9
(No Transcript)
10
DNA REPLICATION
  • Prokaryotic DNA Replication
  • Starts at a single site

11
DNA Replication
  • Eukaryotic DNA Replication
  • starts at many sites along chromosome

12
DNA Replication Comparison
  • Prokaryotes
  • DNA in single loop
  • DNA stretched out about 0.25cm
  • Eukaryotes
  • DNA histones chromosomes
  • smallest chromosome is 10x size of prokayotic
    loop
  • all DNA from human laid out about 2m

13
DNA Replication Animation
  • http//www.dnalc.org/files/videos/dnai/DNAReplicat
    ionBasic_w_FX.mp4

14
Analyzing Data
  • Textbook page 296
  • Notebook page 103
  • Read paragraph
  • Answer questions
About PowerShow.com