BIOS 242 Quiz 3 Microbiology practice exam topic questions and answers

BIOS 242 Quiz 3 Microbiology practice exam topic questions and answers (TCO 5) Catabolic reactions may be characterized as . endergonic breaking large molecules into smaller molecules forming large molecules from smaller molecules photosynthetic None of the above (TCO 5) Enzymes known as lyases participate in reactions. anabolic catabolic both anabolic and catabolic neither anabolic nor catabolic oxidation-reduction (TCO 5) During the Krebs cycle, . either 36 or 38 ATP molecules are synthesized, depending on whether the organism is a prokaryote or a eukaryote pyruvic acid is produced, lowering the pH of the cytoplasm electrons are transferred to NAD+ and FAD in the form of hydrogen atoms NADH and FADH2 are oxidized ribulose 5-phosphate is produced as an intermediate (TCO 5) Anaerobic bacteria may use which of the following as final electron acceptors in respiration? Oxygen Nitrate Ethanol Methane Hydrogen sulfide (TCO 6) An aligned pair of homologous chromosomes is called a . chromatid spindle tetrad coenocyte gamete (TCO 6) Hyphae are associated with which of the following? Yeasts Algae Molds Protozoa Helminths (TCO 6) Lichens are composed of a symbiosis of fungi and which of the following? Green algae Cyanobacteria Euglenoids Cyanobacteria or green algae Euglenoids or dinoflagellates (TCO 7) Host specificity of a virus is due to . particular genes that it shares with the infected cell the presence of an envelope differences in size between the virus and the host cell the presence or absence of a cell wall on the host cell interactions between viral and cellular surface molecules (TCO 7) The phenomenon of transduction is associated with which of the stages of a bacteriophage infection cycle? Attachment Assembly Release Synthesis Entry (TCO 7) The infectious particles of fungi have RNA genomes and lack a capsid. They are therefore similar to . bacteriophages enveloped viruses prions viroids lysogens (TCO 5) Explain why fermentation is a necessary alternative to respiration in many cells.