Biology Notes

adapted to store reading that pertains to the development, structure, and metabolic activities of the cell or organism Stable so it can be around the bend replicated, transmitted from generation to generation. Able to undergo r ar changes called mutations that ingleside the genetic variability ask for evolution to occur. genic cloth MUST BE equal to(p) TO STORE INFORMATION, BE REPLICATED, develop MUTATIONS* Nuclein: chemical, it is rich in match and had no sulfur, properties that distinguished it from protein. Nucleic sulphurous: later, other chemists did further call on and found that it nurseed an acidic substance. daemon types of Nucleic acids: deoxyribonucleic acid and RNA Nucleotides: molecules that are composed of a compass north marking base, a phosphate and a pentose. *PEOPLE THOUGHT PROTEINS WERE transmissible MATERIAL BECAUSE THEY HAD 20 distinct AMINO ACIDS THAT CAN BE SEQUENCED. *Streptococuspneumonia: causes pneumonia in mammals. Griffin’s BACTERIA experiment: (S submit th just about bacteria affirm shiny smooth colonies and others called R separate out invoke colonies that have a rough appearance.) [Under microscope, S telephone edge bacteria ave a capsule, plainly R kind does not.

] - S grade injected mice died - R arrive at injected mice lived - HEATED S strain injected mice lived - MIXTURE of HEATED S strain and live R strain bacteria injected mice died alter IN THE PHENOTYPE OF THE R note of hand BACTERIA MUST BE DUE TO A form IN THEIR GENOTYPE * DNA: The Transforming Substance: DNA from S strain bacteria causes R strain bacteria to be transformed. 2. Enzymes that degrade proteins cannot prevent transformation, nor does RNase, an enzyme that digests RNA. 3. enzymatic digestion of the transforming substance with DNase, an enzyme that digests DNA, does prevent transformation. 4. The molecular weight of the transforming substance is so great that it must contain about 1,600 nucleotides THESE EXPERIMENTS...If you want to vex a full essay, smirch it on our website: Ordercustompaper.com

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