Archaea and Bacteria 0.0 / 5 ? BiologymicrobiologyUniversityNone Created by: exam yesCreated on: 12-01-19 15:35 What is the composition of bacteria cell walls? Peptidoglycan 1 of 10 What are the types of Archaea cell walls ? S-layer of glycoproteins, combined layers of proteins and no cell wall at all 2 of 10 What lipid linkage do Archaea have in their plasma membranes that gives them strength? Ether linkages 3 of 10 What does an extremophile mean to do with Archaea ? Persist in harsh conditions by withstanding extreme temperatures and salty environments 4 of 10 What is located on the vertical axis of a bacteria growth curve? Number of viable cells 5 of 10 What happens during the Lag Phase of bacterial growth? The cells in the culture are adapting to new conditions by synthesising essential molecules or proteins to prepare for growth in the next stage. 6 of 10 What type of essential molecules are cells synthesising during the Log Phase and why? Ribosomes and specific enzymes in order to prepare for mitosis and future protein synthesis 7 of 10 What is happening during stage 2 of bacterial growth called exponential log phase? The number of cells are increasing with maximum rate of cell division. Constant growth with regular doubling intervals 8 of 10 Which stage represents the straight line on a bacterial growth curve Stationary Phase 9 of 10 What two factors can trigger the stationary phase and no increased growth in the number of cell? Nutrients are limited and toxic waste accumulates which changes the conditions of the batch culture 10 of 10
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