Openstax Microbiology Chapter 4 questions and correct answers

Where are prokaryotes found? - ANSWERS Everywhere, air, ground, water, human body carbon fixation - ANSWERS Prokaryotes concert CO2 into organic carbon products nitrogen fixation - ANSWERS Conversion of atmospheric nitrogen into ammonia for survival of plants Prokaryotes clean up - ANSWERS Degrade toxic chemicals How many are pathogen? - ANSWERS Less than 1% How can bacteria contaminate food - ANSWERS Food spoilage and food borne illness Prokaryote characteristics - ANSWERS Unicellular lack membrane bound nucleus and organelles microbial ecology - ANSWERS Study interactions btwn populations Cooperative Interactions - ANSWERS Benefit the populations Competitive interactions - ANSWERS one population competes with another for resources Mutualism - ANSWERS Both benefit Amensalism - ANSWERS One harmed and other not affected Commensalism - ANSWERS One benefits and other not affected Neutralism - ANSWERS Neither affected Parasitism - ANSWERS One benefits and other negatively affected resident microbiota - ANSWERS On human body, important for human health transient microbiota - ANSWERS Temporarily on human body (pathogens) Gram-negative bacteria - ANSWERS Proteobacteria and non-proteobacteria