Nature and Impact of Science and
Engineering- Biology Praxis 5236
Volumetric and Erlenmeyer flasks - answer2 types of flasks
Volumetric flasks - answer Used to accurately prepare a specific volume and
concentration of a solution
Erlenmeyer flask - answer Used for mixing, transporting, and reacting, but are not
appropriate for accurate measurements
Pipette - answer used to accurately measure small amounts of liquid
Repipette - answer A hand-operated pump that dispenses solutions
Beakers - answer used to measure mass or dissolve a solvent into a solute
Graduated cylinders - answerUsed for precise measurements and are considered more
accurate than Erlenmeyer flasks or beakers
Burnett, or buret - answerPiece of lab glassware used to accurately dispense liquid.
Looks similar to a narrow graduated cyclinder
Optical or light microscopes - answerWhat are the most commonly used microscopes in
a lab?
Digital microscope - answerUse a camera and a monitor to allow viewing of a sample
Scanning Electron Microscope (SEM) - answerProvide greater detail of a sample in
terms of the surface topography and can produce magnifications much greater than
those possible with optical micro.
Wet mount slides - answerdesigned for use with a light microscope typically require a
thin portion of the specimen to be placed on a standard glass slide
Electronic balance, triple-beam balance, and spring balances - answerWhat are the
three types of balances that measure mass and force?
Chromatography - answerRefers to a set of lab techniques used to separate or analyze
mixtures
, preparative chromatography - answerRefers to the type of chromatography that involves
purifying a substance for further use rather than further analysis
Analytical chromatography - answerInvolves analyzing the isolated substance
Gas Chromatography - answerRefers to the separation technique in which the mobile
phase of a substance is in gas form
reagent or reactant - answera chemical agent for use in chemical reactions
centrifuge - answerUsed to separate the components of a heterogeneous
mixture(consisting of 2 or more compounds)
centrifugate - answerthe liquid component of the solution that has been centrifuged
Electrophoresis - answerSeparation of molecules based on electrical charge
Calorimetry - answerused to determine the heat released or absorbed in a chemical
reaction
Titration - answerHelps determine the precise endpoint of a reaction
Organic chemistry - answerInvolves many large and complex molecules including the
biochemical compounds carbohydrates, lipids, proteins, and nucleic acids
Chemical reactions - answerOccur in the daily function of organisms even at the cellular
level
Conservation of energy (states that energy is neither created nor destroyed but can
change forms) - answerWhat is the first law of thermodynamics?
Sun - answerThe energy needed for life on earth comes from the..?
Entropy (systems tend toward more disorder or randomness) - answerWhat is the
second law of thermodynamics?
Cell theory - answerstates that all living things are composed of cells, which are the
basic unit of structure and function in living things, and that cells come from preexisting
cells.
Robert Hooke - answerDiscovered cells
Germ theory disease - answerStates that most infectious diseases are caused by germs
or disease causing microbes or pathogens
Engineering- Biology Praxis 5236
Volumetric and Erlenmeyer flasks - answer2 types of flasks
Volumetric flasks - answer Used to accurately prepare a specific volume and
concentration of a solution
Erlenmeyer flask - answer Used for mixing, transporting, and reacting, but are not
appropriate for accurate measurements
Pipette - answer used to accurately measure small amounts of liquid
Repipette - answer A hand-operated pump that dispenses solutions
Beakers - answer used to measure mass or dissolve a solvent into a solute
Graduated cylinders - answerUsed for precise measurements and are considered more
accurate than Erlenmeyer flasks or beakers
Burnett, or buret - answerPiece of lab glassware used to accurately dispense liquid.
Looks similar to a narrow graduated cyclinder
Optical or light microscopes - answerWhat are the most commonly used microscopes in
a lab?
Digital microscope - answerUse a camera and a monitor to allow viewing of a sample
Scanning Electron Microscope (SEM) - answerProvide greater detail of a sample in
terms of the surface topography and can produce magnifications much greater than
those possible with optical micro.
Wet mount slides - answerdesigned for use with a light microscope typically require a
thin portion of the specimen to be placed on a standard glass slide
Electronic balance, triple-beam balance, and spring balances - answerWhat are the
three types of balances that measure mass and force?
Chromatography - answerRefers to a set of lab techniques used to separate or analyze
mixtures
, preparative chromatography - answerRefers to the type of chromatography that involves
purifying a substance for further use rather than further analysis
Analytical chromatography - answerInvolves analyzing the isolated substance
Gas Chromatography - answerRefers to the separation technique in which the mobile
phase of a substance is in gas form
reagent or reactant - answera chemical agent for use in chemical reactions
centrifuge - answerUsed to separate the components of a heterogeneous
mixture(consisting of 2 or more compounds)
centrifugate - answerthe liquid component of the solution that has been centrifuged
Electrophoresis - answerSeparation of molecules based on electrical charge
Calorimetry - answerused to determine the heat released or absorbed in a chemical
reaction
Titration - answerHelps determine the precise endpoint of a reaction
Organic chemistry - answerInvolves many large and complex molecules including the
biochemical compounds carbohydrates, lipids, proteins, and nucleic acids
Chemical reactions - answerOccur in the daily function of organisms even at the cellular
level
Conservation of energy (states that energy is neither created nor destroyed but can
change forms) - answerWhat is the first law of thermodynamics?
Sun - answerThe energy needed for life on earth comes from the..?
Entropy (systems tend toward more disorder or randomness) - answerWhat is the
second law of thermodynamics?
Cell theory - answerstates that all living things are composed of cells, which are the
basic unit of structure and function in living things, and that cells come from preexisting
cells.
Robert Hooke - answerDiscovered cells
Germ theory disease - answerStates that most infectious diseases are caused by germs
or disease causing microbes or pathogens
