Exam 2: BIOS 242 / BIOS242 Fundamentals of Microbiology with Lab (Latest 2024/ 2025 Update) Questions and Verified Answers| 100% Correct| Grade A- Chamberlain
Exam 2: BIOS 242 / BIOS242 Fundamentals
of Microbiology with Lab (Latest 2024/ 2025
Update) Questions and Verified Answers|
100% Correct| Grade A- Chamberlain
Q: which system produces the most atp?
Answer:
electron transport chain
Q: kreb’s cycle produces the majority of
Answer:
nadh
Q: mitochondria
Answer:
etc
Kreb’s cycle
Q: cell membrane
Answer:
kreb’s cycle
Etc
Q: cytoplasm
Answer:
fermentation
Glycolysis
Q: largest producer of cofactors
Answer:
kreb’s cycle
Q: largest producer of atp
Answer:
electron transport chain
Q: cross link between various metabolic pathways
Answer:
kreb’s cycle
Q: kreb’s cycle plays a role in
Answer:
-protein synthesis
- lipid synthesis
- carbohydrate synthesis
Q: energy formed in catabolic processes is
Answer:
atp
Q: what is used for enzyme cofactors and coenzymes?
Answer:
- vitamins and minerals
Q: function of enzyme
Answer:
decrease the activation energy
Q: growth stages in bacterial culture
Answer:
- Lag phase
- Exponential phase
- Stationary phase
- Death phase
Q: autotroph
Answer:
inorganic co2
Q: heterotroph
Answer:
carbon in organic form
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WHICH STEP CAN YOU SEE IN THE 3 MAIN PATHWAYS OF CATABOLISM? Glycolysis
HOW MANY ATP ARE PRODUCED IN FEREMENTATION? 2
WHAT ARE THE STEPS IN AEROBIC/ANAEROBIC RESPIRATION? 1. Glycolysis2. Kreb’s Cycle3. Electron Transport System
ANAEROBIC RESPIRATION doesn’t require oxygen
FINAL PRODUCT IN AEROBIC RESPIRATION Water H2O
FORMATION OF WATER OCCURS IN WHICH STEP Electron Transport Chain
WHICH SYSTEM PRODUCES THE MOST ATP? Electron Transport Chain
KREB’S CYCLE PRODUCES THE MAJORITY OF NADH
MITOCHONDRIA ETC Kreb’s cycle
CELL MEMBRANE Kreb’s CycleETC
CYTOPLASM FermentationGlycolysis
LARGEST PRODUCER OF COFACTORS Kreb’s Cycle
LARGEST PRODUCER OF ATP Electron Transport Chain
CROSS LINK BETWEEN VARIOUS METABOLIC PATHWAYS Kreb’s Cycle
KREB’S CYCLE PLAYS A ROLE IN -Protein synthesis- Lipid synthesis- Carbohydrate synthesis
ENERGY FORMED IN CATABOLIC PROCESSES IS ATP
WHAT IS USED FOR ENZYME COFACTORS AND COENZYMES? – Vitamins and Minerals
FUNCTION OF ENZYME Decrease the activation energy
GROWTH STAGES IN BACTERIAL CULTURE 1. Lag phase2. Exponential phase3. Stationary phase4. Death phase
AUTOTROPH Inorganic CO2
HETEROTROPH Carbon in organic form
PHOTOTROPH Light rays
CHEMOTROPH Chemical compounds
THERMOPHILE OPTIMAL GROWTH 45-80 degrees celsius
WHEN ENZYME ACTIONS STOP DUE TO NEGATIVE FEEDBACK OF AN END PRODUCT THAT ACTS AS A REF]GULATORY MOLECULE IS noncompetitive inhibition
SULFA DRUGS ARE ANALOGUES OF PABA AND PREVENT FOLIC ACID SYNTHESIS competitive inhibition
WHAT INSTRUMENT IS THE MOST EFFECTIVE FOR PRESSURE TEMPERATURE STERILIZATION? Autoclave
ANTIMICROBIAL METHODS OF STERILIZATION – ethylene oxide gas- incineration of loop- autoclave- ionizing radiation
THE USE OF CHEMICAL AGENTS DIRECTLY ON EXPOSED BODY SURFACES TO DESTROY OR INHIBIT VEGETATIVE PATHOGENS IS antisepsis
WHICH OF THESE DRUGS HAS THE MOST NARROW SPECTRUM? Isoniazid
THE INITIAL BRIEF PERIOD OF EARLY GENERAL SYMPTOMS SUCH AS FATIGUE AND MUSCLE ACHE IS THE Prodromal stage
INDIRECT TRANSMISSION OF DISEASE: FOMITE inanimate object that harbors and transmits pathogens
AN INFECTIOUS DISEASE THAT EXHIBITS A RELATIVELY STEADY FREQUENCY OVER A LONG PERIOD OF TIME IN A PARTICULAR GEOGRAPHIC LOCATION Endemic
METHODS OF INOCULATION OF NORMAL BIOTA TO A NEWBORN – birthing process through birth canal- bottle feeding- breast feeding- contact with hospital staff
VIRULENCE FACTOR endotoxin is the LPS on gram negative bacteria
LOCALIZED INFECTION only infects a specific region
SYSTEMIC INFECTION spreads throughout the body through fluids
FOCAL INFECTION was localized but then carried to other tissues
CHRONIC INFECTIONS progress and persist over a long period of times
MICROORGANISMS THAT REQUIRE ANTIBIOTIC RESISTANCE – drug inactivation- efflux pumps- spontaneous mutation- acquisition of new genes
THE COMPLETE DESTRUCTION OF MICROBES IS CALLED sterilization
A DRUG IS ONE WHICH MICROBES SURVIVE BUT ARE NOT ABLE TO GROW AND REPRODUCE bacteriostatic
DRUGS KNOWN AS BETA- LACTAMS INTERFERE WITH BACTERIAL_______ SYNTHESIS cell wall
PERSONS WITH ASYMPTOMATIC INFECTIONS MAY BE A _ OF DISEASE carrier PLACES IN THE BODY WHERE THERE IS NO NORMAL MICROBIOTA ARE REFERRED AS axenic THE STUDY OF THE SPREAD OF DISEASE IN COMMUNITY IS KNOWN AS Epidemiology IODINE, CHLORINE, AND BROMINE ARE EXAMPLES OF ELEMENTS WHICH ARE THE BASIS FOR MANY EFFECTIVE ANTIMICROBIAL AGENTS halogens
A MICROORGANISMS THAT GROW BEST IN HIGH CONCENTRATION OF SALT WOULD BE CHARACTERISED AS halophiles