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OCHS Bio - Unit 6
Unit 6 - DNA
Vocab Word | Answer (from textbook) | Helper/Anchor Phrase |
---|---|---|
nucleic acid | macromolecule used to store genetic information | DNA or RNA |
deoxyribonucleic acid | genetic material that organisms inherit from their parents | DNA - contains deoxyribose sugar |
nucleotide | the building block of nucleic acids - made of a sugar, phosphate group, and nitrogen base | nucleotides make up DNA; they are the "letters" of the genetic code as well as the "backbone" of DNA |
nitrogen base | adenine, theymine, guanine, and cytosine | A,T,C,G - the "letters" of the genetic code |
Chargaff's Rule (Base Pairing) | the percentage of A is equal to the percentage of T, and the percentage of G is equal to the percentage of C | A binds with T, C binds with G = base pairing |
James Watson and Francis Crick | scientists who figured out the shape of DNA as a double helix | double helix scientists |
chromosome | threadlike structure of DNA and protein that contains genetic information; in eukaryotes, chromosomes are found in the nucleus; in prokaryotes, they are found in the cytoplasm | chunks of DNA |
histone protein | proteins that DNA is wrapped around; help to condense the overall size of DNA, allowing it to fit in a smaller area | "beads on a string" |
gene | sequence of DNA that codes for a protein and thus determines a trait; factor that is passed from parent to offspring | the parts of DNA that determine our traits |
DNA replication | process of copying DNA prior to cell division | copying DNA |
DNA polymerase | principal enzyme involved in DNA replication | enzyme (ends in "ase") that copies DNA |
semi-conservative | a term used to describe the copying of DNA, since half of the original DNA is used as a template to create the new DNA strand | half old, half new |
ribonucleic acid | single-stranded nucleic acid that contains the sugar ribose | RNA; used to make proteins |
transformation | process in which one strain of bacteria is changed by a gene or genes from another strain of bacteria | bacteria became deadly because they transformed - Frederick Griffith's experiment |