Nature and Impact of Science and
Engineering- Biology Praxis 5236
Questions and Correct Answers.
Volumetric and Erlenmeyer flasks - Answer 2 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 - Answer Used for precise measurements and are considered more
accurate than Erlenmeyer flasks or beakers
Burnett, or buret - Answer Piece of lab glassware used to accurately dispense liquid. Looks
similar to a narrow graduated cyclinder
Optical or light microscopes - Answer What are the most commonly used microscopes in a
lab?
Digital microscope - Answer Use a camera and a monitor to allow viewing of a sample
Scanning Electron Microscope (SEM) - Answer Provide 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 - Answer designed 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 - Answer What are the three
types of balances that measure mass and force?
Chromatography - Answer Refers to a set of lab techniques used to separate or analyze
mixtures
preparative chromatography - Answer Refers to the type of chromatography that involves
purifying a substance for further use rather than further analysis
Analytical chromatography - Answer Involves analyzing the isolated substance
Gas Chromatography - Answer Refers to the separation technique in which the mobile phase
of a substance is in gas form
reagent or reactant - Answer a chemical agent for use in chemical reactions
centrifuge - Answer Used to separate the components of a heterogeneous
mixture(consisting of 2 or more compounds)
centrifugate - Answer the liquid component of the solution that has been centrifuged
Electrophoresis - Answer Separation of molecules based on electrical charge
Calorimetry - Answer used to determine the heat released or absorbed in a chemical
reaction
Titration - Answer Helps determine the precise endpoint of a reaction
Organic chemistry - Answer Involves many large and complex molecules including the
biochemical compounds carbohydrates, lipids, proteins, and nucleic acids
Chemical reactions - Answer Occur 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) - Answer What is the first law of thermodynamics?
Sun - Answer The energy needed for life on earth comes from the..?
Engineering- Biology Praxis 5236
Questions and Correct Answers.
Volumetric and Erlenmeyer flasks - Answer 2 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 - Answer Used for precise measurements and are considered more
accurate than Erlenmeyer flasks or beakers
Burnett, or buret - Answer Piece of lab glassware used to accurately dispense liquid. Looks
similar to a narrow graduated cyclinder
Optical or light microscopes - Answer What are the most commonly used microscopes in a
lab?
Digital microscope - Answer Use a camera and a monitor to allow viewing of a sample
Scanning Electron Microscope (SEM) - Answer Provide 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 - Answer designed 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 - Answer What are the three
types of balances that measure mass and force?
Chromatography - Answer Refers to a set of lab techniques used to separate or analyze
mixtures
preparative chromatography - Answer Refers to the type of chromatography that involves
purifying a substance for further use rather than further analysis
Analytical chromatography - Answer Involves analyzing the isolated substance
Gas Chromatography - Answer Refers to the separation technique in which the mobile phase
of a substance is in gas form
reagent or reactant - Answer a chemical agent for use in chemical reactions
centrifuge - Answer Used to separate the components of a heterogeneous
mixture(consisting of 2 or more compounds)
centrifugate - Answer the liquid component of the solution that has been centrifuged
Electrophoresis - Answer Separation of molecules based on electrical charge
Calorimetry - Answer used to determine the heat released or absorbed in a chemical
reaction
Titration - Answer Helps determine the precise endpoint of a reaction
Organic chemistry - Answer Involves many large and complex molecules including the
biochemical compounds carbohydrates, lipids, proteins, and nucleic acids
Chemical reactions - Answer Occur 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) - Answer What is the first law of thermodynamics?
Sun - Answer The energy needed for life on earth comes from the..?
