BISC 131 Lab Final Exam with correct
Answers
You are measuring out 5.8 g of sodium chloride. How many milligrams of salt is this? -
Answer -5800 mg
Grams are a measurement of: - Answer -weight
Although you combined water and salt together in a beaker, what piece of labware
should you use to accurately measure the amount of water you need? - Answer -
graduated cylinder
Milliliters (mL) are a measurement of: - Answer -volume
When using a microscope to observe a specimen, you should always begin by looking
at the specimen on low, medium, or high power? - Answer -low
Which focus/adjustment knob (fine or coarse) should be used to focus on a sample
when you are working at higher magnification powers? - Answer -fine
The 100x objective lens requires the use of _______ for proper use. - Answer -oils
Pollution is: - Answer -a contaminant to a natural environment that causes harm to the
organisms there.
Ankistrodesmus are: - Answer -algae that live in fresh water.
In the Environmental Pollution Lab, over what period of time will you continue to monitor
your growing algae? - Answer -2 weeks
What is the function of the Alga-Gro reagent? - Answer -a source of nutrients for the
algae
In the Environmental Pollution Lab, what machine was used to measure the growth of
the algae? - Answer -spectrophotometer
Spectrophotometers are: - Answer -instruments that measure how much light is
absorbed by a sample.
, In the Environmental Pollution Lab, what were some of the control variables? - Answer -
amount of Ankistrodesmus, total volume of solutions, amount of nutrients for the algae,
same environment
In the Environmental Pollution Lab, what was the experimental variable? - Answer -
amount of pollutant
What could you do to molecules in a fluid in order to speed up their rate of diffusion? -
Answer -heat them up (higher temp, more heat)
Osmosis involves movement of: - Answer -water
In the Diffusion/Osmosis Lab, we observed the effects of osmosis on living cells. The
cells used were of which organism? - Answer -potato
In the Diffusion/Osmosis Lab, we observed the effects of osmosis in cells in different
solutions. Theses solutions were composed of water and: - Answer -sodium chloride
In the Diffusion/Osmosis Lab, what aspect of the living cells were measured, after they
had been immersed in their different solutions? - Answer -their mass
In the Diffusion/Osmosis Lab, what were some of the control variables? - Answer -time,
amount of solution, same type of potato
Diffusion is: - Answer -the process by which molecules dissolved in a fluid move until
their distribution in the fluid is uniform.
A solvent is: - Answer -a liquid in which things are dissolved.
A solute is: - Answer -a molecule that is dissolved in a solvent.
A solvent with solutes dissolved in it is called a: - Answer -solution.
Another way to describe diffusion, as it happens in cells, is to say that it is: - Answer -
movement of solutes in a solvent from a region of high solute concentration to a region
of lower solute concentration, until the concentrations are uniform.
Osmosis is - Answer -the movement of water (the solvent) from a region of low solute
concentration to a region of high solute concentration, until the concentration of solutes
in a solvent is uniform.
In a hypertonic solution: - Answer -the concentration of solutes outside of the cell is
higher than the concentration of solutes inside he cell. Therefore, water moves from
inside of the cell to the surrounding solution, causing the cell to shrivel and lose mass.
Answers
You are measuring out 5.8 g of sodium chloride. How many milligrams of salt is this? -
Answer -5800 mg
Grams are a measurement of: - Answer -weight
Although you combined water and salt together in a beaker, what piece of labware
should you use to accurately measure the amount of water you need? - Answer -
graduated cylinder
Milliliters (mL) are a measurement of: - Answer -volume
When using a microscope to observe a specimen, you should always begin by looking
at the specimen on low, medium, or high power? - Answer -low
Which focus/adjustment knob (fine or coarse) should be used to focus on a sample
when you are working at higher magnification powers? - Answer -fine
The 100x objective lens requires the use of _______ for proper use. - Answer -oils
Pollution is: - Answer -a contaminant to a natural environment that causes harm to the
organisms there.
Ankistrodesmus are: - Answer -algae that live in fresh water.
In the Environmental Pollution Lab, over what period of time will you continue to monitor
your growing algae? - Answer -2 weeks
What is the function of the Alga-Gro reagent? - Answer -a source of nutrients for the
algae
In the Environmental Pollution Lab, what machine was used to measure the growth of
the algae? - Answer -spectrophotometer
Spectrophotometers are: - Answer -instruments that measure how much light is
absorbed by a sample.
, In the Environmental Pollution Lab, what were some of the control variables? - Answer -
amount of Ankistrodesmus, total volume of solutions, amount of nutrients for the algae,
same environment
In the Environmental Pollution Lab, what was the experimental variable? - Answer -
amount of pollutant
What could you do to molecules in a fluid in order to speed up their rate of diffusion? -
Answer -heat them up (higher temp, more heat)
Osmosis involves movement of: - Answer -water
In the Diffusion/Osmosis Lab, we observed the effects of osmosis on living cells. The
cells used were of which organism? - Answer -potato
In the Diffusion/Osmosis Lab, we observed the effects of osmosis in cells in different
solutions. Theses solutions were composed of water and: - Answer -sodium chloride
In the Diffusion/Osmosis Lab, what aspect of the living cells were measured, after they
had been immersed in their different solutions? - Answer -their mass
In the Diffusion/Osmosis Lab, what were some of the control variables? - Answer -time,
amount of solution, same type of potato
Diffusion is: - Answer -the process by which molecules dissolved in a fluid move until
their distribution in the fluid is uniform.
A solvent is: - Answer -a liquid in which things are dissolved.
A solute is: - Answer -a molecule that is dissolved in a solvent.
A solvent with solutes dissolved in it is called a: - Answer -solution.
Another way to describe diffusion, as it happens in cells, is to say that it is: - Answer -
movement of solutes in a solvent from a region of high solute concentration to a region
of lower solute concentration, until the concentrations are uniform.
Osmosis is - Answer -the movement of water (the solvent) from a region of low solute
concentration to a region of high solute concentration, until the concentration of solutes
in a solvent is uniform.
In a hypertonic solution: - Answer -the concentration of solutes outside of the cell is
higher than the concentration of solutes inside he cell. Therefore, water moves from
inside of the cell to the surrounding solution, causing the cell to shrivel and lose mass.
