Exam 2 mcb 2610 exam 2 - Study guides, Class notes & Summaries

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 2 Guest Lecture Question and answers already passed 2024/2025 MCB 2610 Exam 2 Guest Lecture Bacteria and humans - correct answer humans have more bacteria than cells -100 trillion cells and 1 quadrillion bacteria -hundreds of types of bacteria -bacteria provide other functions Importance of bacteria - correct answer -provide essential nutrients (vitamin K, amino acids) -stimulate immune system -digest food -inactivate medications -protect against pathogens -pre...

MCB 2610 Exam 2 Question and answers rated A+ 2024/2025 MCB 2610 Exam 2: Guest lecture and paper microbiome - correct answer all the microbial cells living in a particular environment host-associated - correct answer microbiome of a living host How much of the human mass do bacterial cells make up on average - correct answer 3kg How many human genes are there in the human genome? - correct answer 22,000 Are there more bacterial cells or human cells in the human body? - ...

Macronutrients - carbon, nitrogen, phosphorus, sulfur, oxygen, hydrogen, potassium, sodium, magnesium, calcium, and iron Micronutrients - manganese, zinc, cobalt, molybdenum, nickel, copper All organisms require - Carbon, Hydrogen, Oxygen, and electrons Autotrophs - Assimilate carbon from inorganic sources Heterotrophs - Assimilate carbon in preexisting organic form Phototrophs - Capture light energy to produce ATP Chemotrophs - Capture energy from oxidation of reduced organic ...

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...

MCB 2610 Exam 4 Microminutes Question and answers already passed 2024/2025 MCB 2610 Exam 4 Microminutes Anaplasma phagocytophilium shape - correct answer pleiomorphic coci Can lose cell shape due to low peptidoglycan - correct answer Anaplasma phagocytophilium Anaplasma phagocytophilium anaerobe or aerobe - correct answer Facultative anaerobe Anaplasma phagocytophilium gram stains - correct answer negative (pink) Anaplasma phagocytophilium optimal temperature - correct...

MCB 2610 Lab Exam 1 Questions with complete solution 2024/2025 MCB 2610 Lab Exam 1 T streak method - correct answer ussed to isolate colonies 1. steralize loop by placing in flame 2. dip into media 3. spread on zig zap in 1 4. steralize then drag from 1 to 2 5. steralize than drag from 2 to 3 colony - correct answer community of genetically identical cells that can be seen without a microscope liquid vs solid media - correct answer liquid= grow large amounts of bacteria for ...

FISH - Cells fixed in place Fluorescently labeled probes consisting of 165 rRNA gene sequence sent to attach to RNA View in Epifluorescence microscope Cultivation independent methods - DNA from unculturable bacteria can be amplified and sequenced by PCR Sequences can be used to produce fluorescent probes that will bind to complementary DNA (Fluorescent In Situ Hybridization FISH) Microbial consortia - Microbes that can't grow on their own Metagenomics - DNA is isolated from an envir...

Cultivation independent methods - DNA from unculturable bacteria can be amplified and sequenced by PCR Sequences can be used to produce fluorescent probes that will bind to complementary DNA (Fluorescent In Situ Hybridization FISH) FISH - Cells fixed in place Fluorescently labeled probes consisting of 165 rRNA gene sequence sent to attach to RNA View in Epifluorescence microscope Metagenomics - DNA is isolated from an environmental sample and sequenced Metagenomic information must stil...