BIOL1500 Lab Final Exam Questions
and Answers 100% Pass
(Osmosis and Diffusion Lab): What happened to the dialysis bag during the
experiment? - ✔✔Diffusion occurred: High concentrations of molecules within dialysis
bag diffused out of the bag and into starch solution. Causing starch solution to change
color.
Osmosis occurred: Free water in the starch solution passed through and attached itself
to solvents. Causing the weight of the dialysis bag to increase
If you get something in your eyes in the lab, the proper procedure is to? -
✔✔immediately flush them at the eyewash station.
Name one of the few places you can find your pulse according to the handout. -
✔✔radial pulse
Which of the following is not included in lab safety equipment? -
✔✔Spectrophotometer
T/F: The principle of similarity of causation says that what we learn today will be true
tomorrow? - ✔✔False
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,The variable that cannot be changed by the researcher in an experiment is the: -
✔✔dependent variable
What are the 4 basic lab safety rules? - ✔✔1. Wear approved eye protection at all times
2. Wear sensible clothing, tie hair back and low heeled shoes
3. Place personal belongings away from work area & keep lab clean
4. Avoid contamination
What are the 3 ways chemicals and contaminants enter the body? - ✔✔1. Inhalation
2. Ingestion
3. Absorption
What must be performed under fume hood? - ✔✔Experiments that are toxic and/or
irritating substances
What is the Material Safety Data Sheet (MSDS)? - ✔✔A sheet that lists the compound
and hazards of each chemical used in experiment.
6 ways to tell if glassware/ equipment is not in good condition. - ✔✔1. chipped
rims/tips
2. linear/star shaped cracks
3. severely scratched bases
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,4. sharp edges
5.supports do not function accurately
5 ways to handle chemicals with caution. - ✔✔1. read labels
2. use necessary amount (if unsure, less)
3. leave chemicals in designated places
4. clean spills immediately/appropriately
5. label all containers
T/F: When taking amounts from a stock, it is advised that you do not pipette directly
from the stock & you never return excess material back into the stock. - ✔✔True
National Fire Protection Agency (NFPA) developed a diamond-shaped segments used
to label chemicals and rate their degree of hazard. What are the different degrees and
segments? Define each. - ✔✔Segments:
1. Red (flammability/top)
2. Blue (toxicity/left)
3. Yellow (reactivity/right)
4. White (specific hazards/bottom).
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, Degrees of hazard:
0 = none
1 = slight
2 = moderate
3 = severe
4 = extreme
T/F: You should pipette by mouth. - ✔✔False
How should you heat liquids? - ✔✔Water bath method: Heat liquids in a test tube by
placing them in a beaker of boiling water.
T/F: We heat liquids greater than 100 degrees C - ✔✔False
T/F: Safety showers are used for fires. - ✔✔False, they are only used for chemicals.
7 steps to an accident? - ✔✔1. Advise the TA if hurt.
2. Flush burn areas with cold water for 20 minutes
3. If substance is in eyes, wash in eyewash station. If substance gets on face, do not take
eyewear off, just wash face.
4. Wash area with soap/water if a chemical comes into contact
5. Take off contaminated clothing
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and Answers 100% Pass
(Osmosis and Diffusion Lab): What happened to the dialysis bag during the
experiment? - ✔✔Diffusion occurred: High concentrations of molecules within dialysis
bag diffused out of the bag and into starch solution. Causing starch solution to change
color.
Osmosis occurred: Free water in the starch solution passed through and attached itself
to solvents. Causing the weight of the dialysis bag to increase
If you get something in your eyes in the lab, the proper procedure is to? -
✔✔immediately flush them at the eyewash station.
Name one of the few places you can find your pulse according to the handout. -
✔✔radial pulse
Which of the following is not included in lab safety equipment? -
✔✔Spectrophotometer
T/F: The principle of similarity of causation says that what we learn today will be true
tomorrow? - ✔✔False
100% Pass Guarantee Sophia Bennett, All Rights Reserved © 2025 1
,The variable that cannot be changed by the researcher in an experiment is the: -
✔✔dependent variable
What are the 4 basic lab safety rules? - ✔✔1. Wear approved eye protection at all times
2. Wear sensible clothing, tie hair back and low heeled shoes
3. Place personal belongings away from work area & keep lab clean
4. Avoid contamination
What are the 3 ways chemicals and contaminants enter the body? - ✔✔1. Inhalation
2. Ingestion
3. Absorption
What must be performed under fume hood? - ✔✔Experiments that are toxic and/or
irritating substances
What is the Material Safety Data Sheet (MSDS)? - ✔✔A sheet that lists the compound
and hazards of each chemical used in experiment.
6 ways to tell if glassware/ equipment is not in good condition. - ✔✔1. chipped
rims/tips
2. linear/star shaped cracks
3. severely scratched bases
100% Pass Guarantee Sophia Bennett, All Rights Reserved © 2025 2
,4. sharp edges
5.supports do not function accurately
5 ways to handle chemicals with caution. - ✔✔1. read labels
2. use necessary amount (if unsure, less)
3. leave chemicals in designated places
4. clean spills immediately/appropriately
5. label all containers
T/F: When taking amounts from a stock, it is advised that you do not pipette directly
from the stock & you never return excess material back into the stock. - ✔✔True
National Fire Protection Agency (NFPA) developed a diamond-shaped segments used
to label chemicals and rate their degree of hazard. What are the different degrees and
segments? Define each. - ✔✔Segments:
1. Red (flammability/top)
2. Blue (toxicity/left)
3. Yellow (reactivity/right)
4. White (specific hazards/bottom).
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, Degrees of hazard:
0 = none
1 = slight
2 = moderate
3 = severe
4 = extreme
T/F: You should pipette by mouth. - ✔✔False
How should you heat liquids? - ✔✔Water bath method: Heat liquids in a test tube by
placing them in a beaker of boiling water.
T/F: We heat liquids greater than 100 degrees C - ✔✔False
T/F: Safety showers are used for fires. - ✔✔False, they are only used for chemicals.
7 steps to an accident? - ✔✔1. Advise the TA if hurt.
2. Flush burn areas with cold water for 20 minutes
3. If substance is in eyes, wash in eyewash station. If substance gets on face, do not take
eyewear off, just wash face.
4. Wash area with soap/water if a chemical comes into contact
5. Take off contaminated clothing
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