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Lecture 13

BIOL 1201 Lecture Notes - Lecture 13: Light-Independent Reactions, Thylakoid, ChloroplastPremium


Department
Biological Sciences
Course Code
BIOL 1201
Professor
Moroney, James
Lecture
13

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BIOL 1201- Lecture 13- DNA
Avery et al. Conclusions
A molecule is reprogramming
The bacteria making it pathogenic
This properties of this molecule
Are consistent with DNA or RNA
**Clicker questions**
Where is the Calvin Cycle located? Chloroplast stroma
Where is the electron transport chain located? Chloroplast thylakoid
Where are photosystem I and photosystem II located? Chloroplast thylakoid
Where is chlorophyll located? Chloroplast thylakoid
Hershey and Chase
Labeled phage coat (protein) with 35S
Do infected bacterial cells become radioactive (with 35S)?
oRadioactivity is not found in bacteria
Labeled phage DNA with 32P
Do infected bacterial cells become radioactive (with 32P)?
oRadioactivity is in bacteria
Conclusions:
oDNA is entering the bacteria
oDNA is changing the programming
oDNA is the genetic molecule
Discovery of the structure of DNA
Structure explains how genetic information is stored and passed on
“Players” in the race to discover the structure of DNA: James Watson, Francis Crick,
Linus Pauling, Maurice Wilkins, Rosalind Franklin
Watson deduced double helix from x-ray diffraction photo Wilkins showed him
DNA STRUCTURE
Polymer of nucleotides
oNucleotide
Deoxyribose sugar
Phosphate group
Nitrogenous base
DNA is “double stranded” - two polymers, joined at the nitrogenous bases
**Know this structure**
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