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Final

BIOL 112 Study Guide - Final Guide: Rna Polymerase Iii, Rna Polymerase Ii, Rna Polymerase I


Department
Biology
Course Code
BIOL 112
Professor
Jared Taylor
Study Guide
Final

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Nt = N02n = N02 t/g = N0 2kt; Covalent
t = growth time Ionic
n = # times ppn doubles Ion-Permanent Dipole
g = doubling time Permanent-Permanent
k = 1/g = #gen/unit time Permanent Induced
Induced - Induced
Euk
Bac
Arch
Chrom
#
>1
1, some
Except.
1
Chrom
Top
Linear
Circular,
Some
Except.
Circular
Meiosis
Yes
No
No
Saturated
C-C
Unsaturated
C=C
Therm
(warm)
High
Low
Psychro
(cold)
Low
High
Hypertonic relative to inside cell:
More solute outside; H2O leaves cell
Hypertonic relative to inside cell:
Less solute outside; H2O enter cell
Permeability:
Easy: Very small neutral (H2O, CO2, O2)
Med: Uncharged medium (sugars)
Hard:
Charged ions (Na+, NH4
+)
Medium charged (amino acids, nucleotides)
Large any kind (proteins, DNA, polysaccharides)
Exergonic: general release of energy
(think exothermic spontaneous)
Eukaryote transcription: DNA(full) [transcription] mRNA (full), add 5’cap [splice
w/snRPS] spliced transcript enzyme adds poly-A tail, mature RNA done.
Eukaryotic RNAPolymerases:
RNAP I genes for large RNA molecules in ribosomes
RNAP II protein-coding genes
RNAP III genes for t-RNA & small RNA molecules in
ribosomes
RNAP II & III RNA molecules rfound in snRNPs
Repressor binds operator
RNAP/Sigma bind
promoter
Base = A/T/C/G
Phosphate: on 5’
carbon sugar
OH: hydrogyl on 3’
carbon sugar
Promoter & operators bind to both
strands of DNA the direction will
depend on the sequence in the 5’3’
Porins = non-polar
Aquaporins = hydrophilic (polar)
Competitive Inhibition: compete for
active site
Allosteric inhibition: molecule attach
somewhere else, changes active site
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