Microbiology Exam 1- Daydif Asu Dtp | Questions And Answers | Updated 2023/24 | With Complete Solution

Describe the composition, function, and relevance to human health of glycocalyces {Ans: composed of polysaccharides, polypeptides, or both. Protect cells from drying and play a role in the ability of pathogens to survive and cause disease.adhesion to surfaces, prevent bacteria from being recognized or devoured by defensive cells of host}describe the appearance and function of prosthecae in alphaproteobacteria {Ans: unusual extensions; composed of cytoplasm surrounded by the cytoplasmic membrane and cell wall; attachment and to increase surface area for nutrient absorption}Mitochondria {Ans: "powerhouse" produce most of the ATP in a cell}discuss the lack of cell walls in mycoplasmas {Ans: stain pink when Gram stained; survive without cell walls because they colonize osmotically protected habitats, such as animal and human bodies, and because they have tough cytoplasmic membranes, many which contain lipids called sterols that give membranes strength and rigidity}explain how lipids are catabolized for energy and metabolite production {Ans: the fatty acids are degraded in a catabolic process known as beta-oxidation}define microscopy {Ans: use of light or electrons to magnify objects}