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Explain how flagella function to allow bacteria to perform
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- Describe the structure and arrangements of flagella, and explain how they are involved in chemotaxis.Explain how flagella influence motility and motile behavior.Describe functions of pili Explain how flagellar motility and chemotaxis enable bacteria to respond to environmental change. Describe the functions of thylakoids, storage granules, and magnetosomes.
- Diagram and define the four phases of a bacterial growth curve. Describe in detail what is happening to cells at each phase.List three ways that substances can move across theplasma membrane.In the diagram below, identify the structures of a cyanobacterial cell based on the following descriptions: a) Outer cellular covering which includes: Mucilaginous layer – outermost layer covering the cell wall; protects the cell from harmful factors of the environment Cell wall – found just below the mucilaginous layer; 2 or 3-layered, the inner layer lies in between the outer wall layer and plasma membrane; the outer layer is made of peptidoglycan Innermost plasma membrane – selectively permeable membrane enclosing the cytoplasm b) Cytoplasm – found below the plasma membrane; the protoplasm which contains structures of different shapes and functions. Lamellae, which contain pigments such as chlorophylls, carotenes, xanthophylls, phycoerythrin and phycocyanin, are located in the peripheral region of cytoplasm. Ribosomes may also be found scattered in the cytoplasm. c) Nucleic material – the nucleoplasm that is centrally located in the cell and contains chromatin in the form…
- Describe why a biofilm is so resistant and able to withstand standard antibiotics. What specifically makes a biofilm so difficult to kill? Explain the process of binary fission and how it differs from eukaryotic cell divison.Explain the difference between Gram positive and Gram negative cell walls.Name the components of which bacteria wall is made of.