EEE 304 LAB SHEET COMPREHENSIVE
STUDY GUIDE 2026 FULL QUESTIONS AND
SOLUTIONS GRADED A+
◍ plastic chemical spoon.
Answer: used when regular metal spatulas would react with the chemicals
◍ crucible tongs.
Answer: used to avoid adding mass from finger oils (do not use with
beakers)
◍ spatulas and scoopulas.
Answer: used to dispense solid chemicals from their containers
◍ AIA.
Answer: - Nitrogen source and antibiotics - Selective towards actinomyces
due to antibiotic presence
◍ Sheep's blood.
Answer: Differential (hemolysis)
◍ Neutral red.
Answer: Differential
◍ Enterics.
Answer: Gram negative (pink/red)
◍ rubber stoppers.
Answer: used to close containers to avoid spillage or contamination
◍ S. epidermidis gram stain.
Answer: Gram positive (purple)
◍ micro-well plate.
, Answer: used to perform many small scale reactions at once
◍ Antibiotics.
Answer: Selecitve
◍ iron rings.
Answer: connect to a ringstand and provide a stable, elevated platform for
the reaction.
◍ medicine dropper.
Answer: to transfer small amounts of liquid
◍ funnel.
Answer: aids in the transfer of liquid or to separate a solid from a liquid
◍ graduated cylinder.
Answer: instrument used to measure volume of a liquid
◍ Endospore formers.
Answer: Gram positive (purple)
◍ Enterics.
Answer: - Found in soil, gram negative, bacillus shape - Enriched on EEB
plates- Example: E. coli
◍ Erlenmeyer flask.
Answer: used to hold liquids, has narrow neck to prevent splashes
◍ Carbon sources.
Answer: Glucose/sugars, extracts, amino acids/peptides
◍ crucible.
Answer: used to heat substances at very high temperatures
◍ Lactic acid bacteria.
Answer: Gram positive (purple)
◍ Lab Goggles.
Answer: Protects eyes from splashes, spills, gas fumes and broken glass
STUDY GUIDE 2026 FULL QUESTIONS AND
SOLUTIONS GRADED A+
◍ plastic chemical spoon.
Answer: used when regular metal spatulas would react with the chemicals
◍ crucible tongs.
Answer: used to avoid adding mass from finger oils (do not use with
beakers)
◍ spatulas and scoopulas.
Answer: used to dispense solid chemicals from their containers
◍ AIA.
Answer: - Nitrogen source and antibiotics - Selective towards actinomyces
due to antibiotic presence
◍ Sheep's blood.
Answer: Differential (hemolysis)
◍ Neutral red.
Answer: Differential
◍ Enterics.
Answer: Gram negative (pink/red)
◍ rubber stoppers.
Answer: used to close containers to avoid spillage or contamination
◍ S. epidermidis gram stain.
Answer: Gram positive (purple)
◍ micro-well plate.
, Answer: used to perform many small scale reactions at once
◍ Antibiotics.
Answer: Selecitve
◍ iron rings.
Answer: connect to a ringstand and provide a stable, elevated platform for
the reaction.
◍ medicine dropper.
Answer: to transfer small amounts of liquid
◍ funnel.
Answer: aids in the transfer of liquid or to separate a solid from a liquid
◍ graduated cylinder.
Answer: instrument used to measure volume of a liquid
◍ Endospore formers.
Answer: Gram positive (purple)
◍ Enterics.
Answer: - Found in soil, gram negative, bacillus shape - Enriched on EEB
plates- Example: E. coli
◍ Erlenmeyer flask.
Answer: used to hold liquids, has narrow neck to prevent splashes
◍ Carbon sources.
Answer: Glucose/sugars, extracts, amino acids/peptides
◍ crucible.
Answer: used to heat substances at very high temperatures
◍ Lactic acid bacteria.
Answer: Gram positive (purple)
◍ Lab Goggles.
Answer: Protects eyes from splashes, spills, gas fumes and broken glass
