MLS Exam Review: Micro | Verified | 26 Pages

Spores are found in select groups of bacteria. Which of the following statements describes the major advantage to the bacteria that posses these structures? a. Spores are resistant to heat, cold, drying, most chemicals, and boiling b. Spores allow an organism to better control its local environment c. Spores allow bacteria to attach or adhere to host tissues d. Organisms with spores have a more efficient exchange of genetic material - a. Some bacteria form thick-walled structures termed spores. These structures are formed during a process that makes a copy of a chromosome and encloses it with a thick protein coat. This spore is resistant to heat, cold, drying, most chemicals and boiling. Spores can remain viable for many years in soil or dust. Choose the binomial name that is correctly written, a. Staphylococcus Aureus b. Staphylococcus species aureus c. Staphylococcus aureus d. Staphylococcus aUrEuS - c. Genus and species are italicized or underlined. Genus is capitalized; species is lowercase. Fermentation end-products are often used to aid in the identification of bactera. Fermentation results in which of the following? a. Conversion of glucose to pyruvate b. Lactic acid, mixed acids, alchohols, CO2 production c. CO2 and water d. Specific teichoic acids - b. Bacterial cells generate stored energy in the form of ATP by respiration or fermentation. Fermentation is metabolism in the absence of oxygen, an anaerobic process. In fermentation, glucose is converted into pyruvate by either Embdem-Meyerhof pathway or glycolysis. Pyruvate can then enter several other cycles, and the end-products vary depending on cycle entered. In aerobic respiration, glucose usage under aerobic conditions and pyruvate enters the Kreb's cylce (TCA cycle). The end-products of respiration are carbon dioxide and water. The unique metabolic pathways and end-products produced by bacteria can be used to aid in the ID of particular genera or species