chapter 5 test Flashcards
miescher
nuclin, the center of the cell has DNA, he stripped everything away from the cell except for the nucleus
hunt morgan
genes are linearly ordered on chromosomes
Griffith
‘transforming principle’
Avery
used enzymes to show DNA is transforming principle
Chargaff
Chargaff rule= A&T are equal, and C&G are equal
Hershey and chase
found that DNA is the hereditary material
wilkins and franklin
x-ray DNA
watson and crick
DNA is a double helix
3 parts structure of DNA
sugar(deoxyribose)
phosphate group
nitrogenous bases (G,C,A,T, U instead of T for RNA)
transcription
copying the sequence of DNA into a single strand of mRNA in the nucleus
translation
decoding the mRNA transcript into a sequence of amino acids that builds a protein in the ribosome
central dogma
DNA self-replicates, information flows from DNA to RNA to protein
telomere
region at the end of the chromosome -TTAGGG- when there are not enough left, the cell cannot divide anymore
6 characteristics of life
1) composed of cells, operate on many levels of organization
2)metabolize
3)grow, develop, reproduce
4)use and transmit genetic info
5)respond
6)adapt
4 biomolecules
lipids, proteins, amino acids, carbohydrates