Mcb 2610 - Study guides, Class notes & Summaries

MCB 2610 exam 1 Question and answers rated A+ 2024/2025 MCB 2610 exam 1 - rossi Serratia Marcescens - correct answer ~single, gram neg. rod ~found in grout, bathrooms, soil ~grows well because of substrates (make ATP) ~causes UTIS.infections/conjuctivitis/ keratitis ~R plasmid = antibiotic resistance ~pathogenic - killed 1 and infected 11 in training drills ~ motile single polar flagellum ~ facultative anaerobe ~non spore forming ~mesophile E. Coli - correct answer ~gram ne...

MCB 2610 Exam 1 Questions wth complete solution 2024/2025 MCB 2610 Exam 1 3 domains of life - correct answer Bacteria, Archaea, (prokaryote) archaea don't have peptidoglycan Eukarya= algae, plants, animals, fungi, protists (eukaryote) oririgate frome archaea tree of life - correct answer the phylogenetic tree that includes all organisms 20 yrs ago, can't grow can't study, only 1-10% can be grown linear distance between the endpoints of any two lines is proportional to th...

MCB 2610 Exam 3 Questions with complete solution 2024/2025 MCB 2610 Exam 3 Shigella flexneri - correct answer - single rods/short chain -causes shiglosis(dysenteria) -gram negative -facultative aerobe -catalase positive -oxidase negative - no flagella -non spore forming -grows optimally at 37 degrees C Haemophilus influenzae - correct answer - opportunistic pathogen - usually grown in chocolate agar(needs specific factors to grow) - spread via respiratory droplets - ty...

Bacteria shapes - Cocci, bacilli, vibrios (comma shaped), spirilla (spiral), pleiomorphic (various shapes) adherence molecules to stick to surfaces - - mediated by pili, fibers of pilin proteins possess other proteins on their tips for sticking - a sex pilus is used for conjugation - some microbes use an extension of the cell envelope tipped by a "holdfast" of paysaccharides 3 parts of flagella - - filament - hook protein - basal body active transport - - all microorganisms active tr...

B-lactam resistance - Lactamases - enzymes that cleave beta lactam structure usually between carbon and nitrogen - makes it no longer a structural mimic and transpeptidase keeps cross-linking peptide side chains Antimicrobial Agents - Agents that kill microorganisms or inhibit their growth -cidal agents kill -static agents inhibit growth Household cleaners are disinfectants 14 out of 20 burn patients get pseudomonas infections from stainless steel tub cleaned with a quat.. why? - Quats d...

MCB 2610 Exam 1 Questions with complete solution 2024/2025 MCB 2610 Exam 1 Microbiology - correct answer The study of microbes Micro bio examines... - correct answer How microbes interact with humans and food and how they can be used by humans Prokaryotic cells - correct answer Lack a true membrane-delimited nucleus Eukaryotic cells - correct answer Have a membrane enclosed nucleus More complex morphologically Carl Woese used ribosomal RNA to divide organisms into... - ...

Koch and his Postulates - 1. the microorganism must be present in every case of the disease but absent in healthy individuals 2. the suspected organism must be isolated and grown in a pure culture 3. the same disease must result when the isolated microorganism is inoculated into a healthy host 4. the same microorganism must be isolated again from the diseased host Developments due to Koch's Postulates - 1. Agar (Fanny Hess) 2. Petri Dish (Richard Petri) 3. Nutrient broth and nutrient aga...

MCB 2610 Exam 1 Question and answers correctly solved 2024/2025 MCB 2610 Exam 1 microbiology defintion - correct answer study of microbes themes of microbiology - correct answer 1. understanding basic life processes 2. interactions with environment and apply basis of life - correct answer metabolism, growth, reproduction, genetic variation/evolution, response/adaptation to the external environment, homeostasis prokaryotic cell - correct answer lack of true internal membrane...

MCB 2610 Lab Exam I Questions with complete solution 2024/2025 MCB 2610 Lab Exam I what is the quickest and most economical method of bacterial isolation? - correct answer streak plate method what is the purpose of aseptic technique? - correct answer maintain pure cultures what is the purpose of a T-streak? - correct answer isolate and maintain single species from mixed populations which objective lens should never be used with immersion oil? - correct answer 40x procedu...

MCB 2610 Exam Question and answers correctly solved 2024/2025 MCB 2610 Exam #1 Robert Hooke (1665) - correct answer - developed microscope that could magnify 30X -cell theory: all living things are composed of cells ( life consisted of "little boxes") Antony van Leeuwenhoek () - correct answer -first person to observe and describe microorganisms accurately with a microscope that could magnify 50-300X -microbes = animalcules -studied own teeth scrapings and diarrhea sponta...