Exam I SG Set 1 QA-revised

Exam I SG Set 1 QA-revised - Study Question Sets for Exam 1...

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Study Question Sets for Exam 1 Study Question Set 1 Introduction, Tissues 1.  What are the major distinctions between eukaryotic cells and prokaryotic cells in  terms of cell size: eukaryotic cells are larger and prokaryotic cells are smaller.  Cell organization in eukaryotes, they have a true nucleus, DNA packed in  chromatin and membrane-bound organelles. Prokaryotes do not have  compartmentalized structures; loose DNA, no distinct nucleus.  2. What are the three "domains of life"? Eubacteria, Archaebacteria and Eukaryotes. 3. In what way is the eukaryote/prokaryote dichotomy misleading in terms of the  evolutionary relationships among the three domains of life, as we  currently  understand them? From RNA phylogenetic tree the Eubacteria branched from the common ancestor  and later Archaebacteria and eukaryotes branched from the same origin, even  though they belong to a different type of cell structure. Eubacteria was grouped  due to its metabolic properties and energy conversion synthesis. Archaebacteria  and eukaryotes are grouped due to its similarities in gene expression such as  replication, transcription and translation.  4. What do we mean by "primary endosymbiosis" as accounting for the origins of  mitochondria and chloroplasts? An anaerobic eukaryote engulfed an aerobic prokaryote (Gram-negative  Eubacteria) and it became the mitochondria, because it reduces O  during break  down of food molecules to produce ATP. The two organisms benefited from each 
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This note was uploaded on 04/13/2009 for the course BIOL 3622 taught by Professor Ms during the Fall '05 term at UMSL.

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Exam I SG Set 1 QA-revised - Study Question Sets for Exam 1...

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