DNA
This presentation is the property of its rightful owner.
Sponsored Links
1 / 15

DNA PowerPoint PPT Presentation


  • 87 Views
  • Uploaded on
  • Presentation posted in: General

DNA. Deoxyribose Nucleic Acid. DNA…your book of life. http://www.cbsnews.com/8301-3445_162-57556650/a-need-to-know-the-worst-news-you-will-ever-hear/ Would you want to know?. The information stored on DNA from one human cell. Equals the amount of information in 1000, 500 page books.

Download Presentation

DNA

An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

Presentation Transcript


Dna

DNA

Deoxyribose Nucleic Acid


Dna your book of life

DNA…your book of life

  • http://www.cbsnews.com/8301-3445_162-57556650/a-need-to-know-the-worst-news-you-will-ever-hear/

  • Would you want to know?


Dna

The information

stored on DNA

from one human cell

Equals the amount of

information

in 1000, 500 page books.


Dna

  • 2 Main Functions of DNA

  • Carry the Code of Life-instruction manual for every living organism

  • 2. Blueprint for making proteins


Dna

The structure was discovered in 1953 by two scientists: James Watson & Francis Crick


Dna

Double Helix=shape of DNA


Dna

  • Nucleotidesare the basic structural units of DNA and consist of 3 things:

  • Phosphate2. Sugar (Deoxyribose)

  • Nitrogen Base (Can be a Pyrimidine or Purine)


Dna

Nitrogen Bases

Purine = Adenine (A), Guanine (G)

Pyrimidine =Thymine (T), Cytosine (C)

*All 3 have a Y

Watson’s Discovery Watson's Ideas


Dna

Base Pairing

A-T

C-G

Nitrogen Bases attached to Deoxyribose (sugar)

http://www.dnalc.org/resources/3d/21-chargaff-ratios.html Chagraff’s Rule


Dna

Hydrogen bonds are the glue that hold everything together

Sugar – Deoxyribose

Phosphate Groups (spacer)

Nitrogen Bases – Code of Life in ATCG

Thymine always pairs with Adenine

Guanine always pairs with Cytosine

GC

AT

CG

T A

GC

G C


Dna

What makes up the “Backbone” of the DNA Double Helix?

Which structure in the backbone is directly attached to the Nitrogen bases?

What are the “spacers” between each step?

Why were Mike&Ikes a good example for the purines?

Why were Skittles a good example for the pyrimidines?


Dna

  • DNA must replicate or make a copy of itself before a cell can divide.

  • Play DNA Replication video from PBS in home folder

  • Remember Interphase?


Dna

DNA Replication – DNA makes a copy of itself

Important during meiosis & mitosis because it makes sure the daughter cells have the appropriate number of chromosomes.

DNAi animation

If the original strand of DNA is AATTGGCC

The complementary strand of DNA is TTAACCGG


  • Login