Lecture 06 - Lecture 6 Bacterial and Archaeal Cell...

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1 Lecture 6 BBOM 12e Sec. 4.3, 4.6, 4.8 Cell Envelopes Bacterial and Archaeal Cell Structure Nucleoid, Cytoplasm, Inclusion Bodies, Endospores BBOM 12e Sec. 2.5, 3.2, 4.10-4.12 The Bacterial Cell Model: Rapidly growing Escherichia coli cells 70% Water 30% Dry Matter Protein (All parts) DNA (Nucleoid, Plasmids) RNA (Ribosomes, …) Cytosol (Solutes for Biosynthesis) Polysaccharide (CW) Lipopolysaccharide(CW) Of what is it made? Cytoplasm Cell Envelope Read: BBOM 12e Sec. 2.5, 3.2 Cellular composition based on cell fractionation and biochemical analysis
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2 Hallmark Structure of the Prokaryotic Cell: The Nucleoid The aggregated DNA in a prokaryotic cell Other terms related to DNA : Genome : all genes in an organism Chromosome : large genetic element(s) carrying most genes essential for life. Plasmid : smaller genetic element, often carrying adaptive, non-essential genes The functional equivalent of the nucleus in eukaryotic cells ds DNA DNA-binding
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Lecture 06 - Lecture 6 Bacterial and Archaeal Cell...

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