Biology 330 Exam 2

Characterization of nucleic acids found within a virus include
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The entry step of the viral life cycle requires that the entire virus (capsid and genome) is inserted within the hostFalseThe majority of known enveloped viruses tend to infect ____ and often derive their envelope from _____E. animals/the host cell membraneViral replication occurs either intracellularly or extracellularly, depending on the virusFalseA lytic virus is one which results inA. cell lysisThe physical size of a virus is typically within the _____ rangeE. nanometerAfter entry into the host cell early stage of synthesis include the transcription of capsid genesFalseFor a carbon source, chemoorganotrophs generally use such compound asA. glucoseAutotrophic microorganisms use organic molecules to acquire both energy and carbonFalseA aerobic chemoorganotroph and an aerobic chemolithotroph in the same environment would NOT compete forB. carbonMetabolic diversity in respiration revolves around a common process, which is generation of a proton motive forceTrueChlorosomes are the primary site of photosynthesis in eukaryotic cellsFalseThe process by which electrons from the quinone pool are forced backward against the thermodynamic gradient to reduce NADP+ to NADPH is called theA. reverse electron flowAutotrophs require an inorganic carbon source to produce biomassTrueOxygen is an important by-product of cyclic prototrophyFalseIn a redox tower the closer electron donors are to their electron acceptors the smaller the change in free energy available to generate the proton motive forceTrueFermentation only occurs in the presence of an external electron acceptorFalseIn fermentation the oxidation of NADH is necessary toB. generate NAD+ molecules (which can be reduced again)Organisms that survive in environments with high sugar contents are psycrotolerantFalseGlycolysis refers to a series of enzymatic reactions within a cell that generate ATP through substrate-level phosphorylationTrueThe net result of electron transport is the generation of a pH gradient and an electrochemical potential across the membraneTrueThe rising of bread dough is the result ofA. carbon dioxide produced by fermentationIn aerobic respiration the terminal electron acceptor isD. oxygenHydrothermal vent bacteria often are symbionts living within the tissue of other organismsTrueThe citric acid cycle serves to oxidize pyruvate and reduce NADTrueAlthough some prokaryotes have optimal growth temperatures approaching the boiling point; no microorganisms are capable of living above the boiling pointFalse