Week 9 Questions - Week 10 Questions 1.) What is so...

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Week 10 Questions 1.) What is so important about cyanobacteria from an evolutionary perspective? Oxygenic photosynthesis, they were the most advanced metabolically. This is showed because they perform oxygen photosynthesis, fixed carbon with the calvin cycle, they broke down glucose aerobically(with oxygen) with the electron transport chain. They were really advanced bacteria. They are prokaryotes…cyanobacteria becomes chlorophyll 2.) What are the names of the two bacterial kingdoms that form an endosymbiotic union to give rise to the eukaryotes? Eubacteria and the archaebacteria gave rise to the eukaryotes. a. What did each kingdom supply to the symbiosis? Eubacteria (purple)(cyanobacteria)- provides 36 ATPS to the archibacteria for protection from the Archibacteria Archibacteria- archibacteria eats the eubacteria, and so the archibacteria provides protection for the eubacteria. b. Which specific lineage evolved into mitochondria? Purple bacteria c. Which specific lineage evolved into chloroplasts? cyanobacteria 3.) Loss of the cell wall in the Archaebacteria has important consequences. a. What are the negative consequences of the lack of cell wall. The cell can get more damaged and is susceptible to mechanical and osmotic stress b. Name two very different positive consequences of the lack of cell wall.
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Multiple points of origin, and phagocytosis c. How did the loss of the cell wall lead to a symbiotic relationship with Eubacteria? It leads to phagocytosis, which is the capturing of food. If you had a cell wall you wouldn’t be able to bring food into the cell. It allows achibaceria to eat the eubacteria. 4.) Describe how proteins are “locked” into a cell membrane. Use the words, hydrophobic amino acids, hydrophilic amino acids, polar areas, nonpolar areas . Water is outside and inside…so the hydrophilic amino acids are on the outsides of the membrane and the hydrophobic amino acids are in the inside…just like we talked about before. The head where the hydrophilic acid is…the outside…is where it is polar, and the inside where the hydrophobic
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Week 9 Questions - Week 10 Questions 1.) What is so...

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