BIOL 112 Study Guide - Comprehensive Final Exam Guide - Dna, Protein, Messenger Rna
20 Nov 2018
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BIOL 112 Full Course Notes
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The mass is distributed by the protons in the nucleus (# protons + # neutrons = mass # dalton (d)) Different number of neutrons (e. g. c14 vs. c12) Used for fossils, bones for research, i. e. how old the bones truly are certain amount of. If c14 has completely decayed fossil is old: c14 freshly decayed, levels are short of normal fossil is fresh. Humans have the same amount of c14 as co2 in the body until they die. C14 de(cid:272)ays whe(cid:374) dead, de(cid:272)reases the lo(cid:374)ger you"re dead. Rows: left to right has more electrons (electron affinity: # row = # valence. Chemical bonds contribute 1+ electrons to create a new orbital (e. g. 2h - forming 1 covalent bond, ch4 4 covalent bonds) Made of two electrons, shared from each atom to form bonds until the outer most shell is filled. Bonds are shared unequally (e. g. h2o electron distribution more towards the o due to electronegativity partial charges)
