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Chapter

BIOL107 Chapter Notes -Chromatin, Nucleolus, Mitochondrion

3 pages97 viewsFall 2013

Department
Biology (Biological Sciences)
Course Code
BIOL107
Professor
Lesley Harrington

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ENDOMEMBRANE SYSTEM
IN PROK
Chromosomes -Long circle dsDNA, 5000
bp long
-Contain information
E. Coli Strains -Pathogenic H57:O7
-Beneficial K12
-Lab Strains DH5a
4600 chromosomes, 4600
genes
Plasmids -Small circles of dsDNA; 1-
100 copies
-Resistance (suppress
function of antibiotics)
-Fertility (DNA transfer)
-Having plasmids = better
in extreme cases, otherwise
reproduce slowly
Ribosomes 7000-70,000/ cell
Make new proteins
Having MORE ribosomes =
faster reproduction
70S RIBOSOME
234; 121//rRNA rProteins
Inclusion Bodies Stores nutrients in big
clumps
Helps cell move to where
nutrients are
IN EUK
Nucleus Takes up 6% volume
Has:
- Chromatin
- Pores
- Envelope
- Nucleolus (2 layers
+ inner fluid +
lamina + pores x
3000)
Makes RNA, assembles
ribosomes
Plasma Membrane Holds everything inside
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