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25 Cards in this Set
- Front
- Back
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What did Eriwin Chargaff contribute to discovering DNA?
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He discovered that the amount of Adenine in a DNA molecule = the amount of Thymine and the amount of Guanine = the amount of Cytosine.
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What did Chargaff name these discoveries?
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Chargaff's rules.
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What did Maurice Wilkins and Roaslind Franklin both contribute to discovering DNA?
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They both used xrays to see the spiral shape (double helix)
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Did Maurice and Rosalind like eachother?
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No
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Who is James Watson and Francis Crick
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They built the first DNA Molecule structure
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Who won the Nobel Prize for DNA?
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Watson Crick and Wilkins
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What is a Nucleotide made up of
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Sugar Phosphate and base
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What are the 4 bases in a DNA strip
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adenine thymine guanine cytosine
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If you are talking about mRNA what is the subsitute for thymine?
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Uracil.
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what is the process wehre dna copies itself?
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replication
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What is mRNA?
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one half that gets copied and matched wtih tRNA
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What is tRNA/
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carries amino acid
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what is a ribosome?
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it makes proteins
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what is a codon
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3 bases that contain certain amino acids
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what is a mutation
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a change in the dna
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waht is mutagens?
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anything that mutates dna
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give 5 examples of mutagens
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radiation, x rays, abstestos, uv light and cigarette smoke
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what are the 3 differnet kind of mutations
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insertion deletion subsittution
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what is sickle cell anemia?
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a subsittuoin that changes the protein in the red blod cells (hemoglobin) changes the shape..
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what are stem stells?
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they are bascially cells taht don't have a task yet and are neutrual so you can put them anywehre and they can preform that task
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where can you find stem cells
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in adults and embryos
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what is the controversy?
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these stem cells could help cure many diseases but people feel that using stem cells from embryos is like killing a possible person
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what is prochoice
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the group of people that thinks that an embryo is not a person and is for abortion
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what is prolife
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thinks embryo is a person adn against abortion
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what was president bush's decision?
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he will fund adult stem cells unbilical stem cells and no NEW embryonic cells.
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