Mcb 2610 exam 2 - Study guides, Class notes & Summaries

MCB 2610 Exam 2 Questions with complete solution 2024/2025 MCB 2610 Exam 2 (Dr. Ortenberg) Morphology: Form - correct answer Punctiform, Circular, Filamentous, Irregular, Rhizoid, Spindle Morphology: Elevation - correct answer Flat, Raised, Convex, Pulvinate, Umbonate Morphology: Margin - correct answer Entire, Undulate, Lobate, Erose, Filamemtous, Curled Types of microbial associations? - correct answer Symbiotic vs. Nonsymbiotic Symbiotic Microbial Association - corre...

MCB 2610 Exam 2 Question and answers verified to pass 2024/2025 MCB 2610 Exam 2 Macronutrients - correct answer carbon, nitrogen, phosphorus, sulfur, oxygen, hydrogen, potassium, sodium, magnesium, calcium, and iron Micronutrients - correct answer manganese, zinc, cobalt, molybdenum, nickel, copper All organisms require - correct answer Carbon, Hydrogen, Oxygen, and electrons Autotrophs - correct answer Assimilate carbon from inorganic sources Heterotrophs - correct an...

MCB 2610 Exam 2 Question and answers already passed 2024/2025 MCB 2610 Exam 2 Nutritional Requirements of microorganisms: Macronutrients - correct answer all cells need access to large amounts of carbon, nitrogen, phosphorous, sulfur, and oxygen to build macromolecules Nutritional Requirements of microorganisms: Micronutrients - correct answer · are also required by microbes o Includes several metal ions (NA+, Mg2+, Mn2+, etc.) o Often required for protein structure/activity, bi...

MCB 2610 Exam 2 Question and answers verified to pass 2024/2025 MCB 2610 Exam 2 Nutritional requirements of microorganisms - correct answer Macronutrients and micronutrients Macronutrients - correct answer Needed in higher quantities Needed to make macromolecules: carbon, nitrogen, phosphorus, sulfur, oxygen and hydrogen Required as co enzymes: Potassium, sodium, magnesium, calcium, and iron ex: Mg is a cofactor for DNA polymerase Micronutrients - correct answer Mn, Zn, C...

MCB 2610 exam 2 Question and answers verified to pass 2024/2025 MCB 2610 exam 2 Listeria monocytogenes - correct answer Gram positive rods, no spores or capsules, facultative anaerobe, only has flagella when growing below 30C it has a wide range of temperatures that it can grow in ( 1-45C) It is a virulent food borne pathogen and intracellular parasite, that is found in raw milk, cheeses, veggies, processed meat. 18 people died in Nova Scotia due to coleslaw contamination with sh...

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...

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...

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...

EXAM 2: MCB 2610 Exam 2 with Complete Solutions Cultivation independent methods CORRECT ANS-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 CORRECT ANS-Cells fixed in place Fluorescently labeled probes consisting of 165 rRNA gene sequence sent to attach to RNA View in Epifluorescence microscope