STRAIGHTERLINE MICROBIOLOGY LAB
BIO250L LABS 1 2 3 4 5 6 7 8 ACTUAL EXAM
2026 SOLVED QUESTIONS AND VERIFIED
ANSWERS GRADED A+
⩥ agent naturally produced by microorganisms. Answer: antibiotic
⩥ agent that slows the growth of bacteria. Answer: bacteriostatic
⩥ agent artificially synthesized or manipulated from other products.
Answer: antimicrobial
⩥ targets DNA gyrase, preventing DNA replication within a cell.
Answer: novobiocin
⩥ Disrupts cell wall stability, eventually leading to cell lysis. Answer:
penicillin
⩥ binds with bacterial ribosomes to prevent cell growth and cell
division. Answer: gentamicin
⩥ the mold that alexander fleming observed preventing bacterial growth
was. Answer: penicillium notatum
,⩥ since the discovery and use of antibiotics, we no longer need to worry
about bacterial infections. Answer: false
⩥ penicillin works by. Answer: disrupting cell wall stability
⩥ novobiocin prevents the function of ______ in a cell. Answer: DNA
gyrase
⩥ bacteriostatic antibiotics cause an inhibition of growth rather than cell
lysis and death. Answer: true
⩥ gentamicin binds with bacterial _______. Answer: ribosomes
⩥ the effective zone of inhibition is the same for all antibiotics. Answer:
false
⩥ an antibiotic is a synthetic drug produced in a laboratory. Answer:
false
⩥ ______ is a genus that produces antibiotics. Answer: all of the above:
Bacillys, Cephalosporium, and Streptomyces
, ⩥ penicillin is produced by a ____. Answer: mold
⩥ novobiocin is a bacteriostatic, narrow-spectrum antibiotic. Answer:
true
⩥ gentamicin is synthesized by a ___. Answer: gram-positive bacteria
⩥ bacteriocidal agents kill bacteria by _____. Answer: cell wall lysis
⩥ resistant bacteria will exhibit ____ during a kirby-bauer diffusion test.
Answer: no zone of inhibition
⩥ a spreader is used when inoculating a kirby-bauer diffusion plate to
___. Answer: create a uniform bacterial lawn
⩥ zones of inhibition should be measured after they exceed 25 mm.
Answer: false
⩥ the diagram below illustrates resistance to drug ___ (nothing around
A, little around B, large around C). Answer: A
⩥ ______ are asexually produced spores of the penicillum fungus.
Answer: conidia
BIO250L LABS 1 2 3 4 5 6 7 8 ACTUAL EXAM
2026 SOLVED QUESTIONS AND VERIFIED
ANSWERS GRADED A+
⩥ agent naturally produced by microorganisms. Answer: antibiotic
⩥ agent that slows the growth of bacteria. Answer: bacteriostatic
⩥ agent artificially synthesized or manipulated from other products.
Answer: antimicrobial
⩥ targets DNA gyrase, preventing DNA replication within a cell.
Answer: novobiocin
⩥ Disrupts cell wall stability, eventually leading to cell lysis. Answer:
penicillin
⩥ binds with bacterial ribosomes to prevent cell growth and cell
division. Answer: gentamicin
⩥ the mold that alexander fleming observed preventing bacterial growth
was. Answer: penicillium notatum
,⩥ since the discovery and use of antibiotics, we no longer need to worry
about bacterial infections. Answer: false
⩥ penicillin works by. Answer: disrupting cell wall stability
⩥ novobiocin prevents the function of ______ in a cell. Answer: DNA
gyrase
⩥ bacteriostatic antibiotics cause an inhibition of growth rather than cell
lysis and death. Answer: true
⩥ gentamicin binds with bacterial _______. Answer: ribosomes
⩥ the effective zone of inhibition is the same for all antibiotics. Answer:
false
⩥ an antibiotic is a synthetic drug produced in a laboratory. Answer:
false
⩥ ______ is a genus that produces antibiotics. Answer: all of the above:
Bacillys, Cephalosporium, and Streptomyces
, ⩥ penicillin is produced by a ____. Answer: mold
⩥ novobiocin is a bacteriostatic, narrow-spectrum antibiotic. Answer:
true
⩥ gentamicin is synthesized by a ___. Answer: gram-positive bacteria
⩥ bacteriocidal agents kill bacteria by _____. Answer: cell wall lysis
⩥ resistant bacteria will exhibit ____ during a kirby-bauer diffusion test.
Answer: no zone of inhibition
⩥ a spreader is used when inoculating a kirby-bauer diffusion plate to
___. Answer: create a uniform bacterial lawn
⩥ zones of inhibition should be measured after they exceed 25 mm.
Answer: false
⩥ the diagram below illustrates resistance to drug ___ (nothing around
A, little around B, large around C). Answer: A
⩥ ______ are asexually produced spores of the penicillum fungus.
Answer: conidia
