©THESTAR 2024/2025 ALL RIGHTS RESERVED 1:27PM. A+
BIOL1500 Lab Final Exam Questions And
Answers |Latest 2025 | Guaranteed Pass
(Osmosis and Diffusion Lab): What happened to the dialysis bag during the experiment? -
Answer✔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? - Answer✔immediately
flush them at the eyewash station.
Name one of the few places you can find your pulse according to the handout. - Answer✔radial
pulse
Which of the following is not included in lab safety equipment? - Answer✔Spectrophotometer
T/F: The principle of similarity of causation says that what we learn today will be true
tomorrow? - Answer✔False
The variable that cannot be changed by the researcher in an experiment is the: -
Answer✔dependent variable
What are the 4 basic lab safety rules? - Answer✔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? - Answer✔1. Inhalation
2. Ingestion
3. Absorption
1|Page
, ©THESTAR 2024/2025 ALL RIGHTS RESERVED 1:27PM. A+
What must be performed under fume hood? - Answer✔Experiments that are toxic and/or
irritating substances
What is the Material Safety Data Sheet (MSDS)? - Answer✔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. - Answer✔1. chipped rims/tips
2. linear/star shaped cracks
3. severely scratched bases
4. sharp edges
5.supports do not function accurately
5 ways to handle chemicals with caution. - Answer✔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. - Answer✔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. - Answer✔Segments:
1. Red (flammability/top)
2. Blue (toxicity/left)
3. Yellow (reactivity/right)
4. White (specific hazards/bottom).
Degrees of hazard:
0 = none
1 = slight
2 = moderate
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, ©THESTAR 2024/2025 ALL RIGHTS RESERVED 1:27PM. A+
3 = severe
4 = extreme
T/F: You should pipette by mouth. - Answer✔False
How should you heat liquids? - Answer✔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 - Answer✔False
T/F: Safety showers are used for fires. - Answer✔False, they are only used for chemicals.
7 steps to an accident? - Answer✔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
6. Use stop-drop-roll-yell technique or fire blanket and extinguisher during a fire. If fire cannot
be extinguished, evacuate and pull alarm.
7. Ask instructor to assist with first aid.
After you use a fire extinguisher, what must you do? - Answer✔Label it used.
2 things to do when trying to extinguish a fire? - Answer✔1. Try to turn off the supply of gas to
the fire area
2. Direct the spray from the extinguisher at the base of the flames.
T/F: students can access first aid kit - Answer✔False, only TA's and other personnel.
Public Safety phone number? - Answer✔extension x28999 or 954-262-8999
T/F: You place waste in regular trash. - Answer✔False, you dispose of it in proper bin. I.e.: glass
goes in glass dispose box, biohazards go in biohazard box.
Which variable is which for x axis and y axis? - Answer✔X axis = independent variable
Y axis = dependent variable
What was the purpose of heart rate lab? - Answer✔investigate factors that can change heart
rate.
3|Page
BIOL1500 Lab Final Exam Questions And
Answers |Latest 2025 | Guaranteed Pass
(Osmosis and Diffusion Lab): What happened to the dialysis bag during the experiment? -
Answer✔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? - Answer✔immediately
flush them at the eyewash station.
Name one of the few places you can find your pulse according to the handout. - Answer✔radial
pulse
Which of the following is not included in lab safety equipment? - Answer✔Spectrophotometer
T/F: The principle of similarity of causation says that what we learn today will be true
tomorrow? - Answer✔False
The variable that cannot be changed by the researcher in an experiment is the: -
Answer✔dependent variable
What are the 4 basic lab safety rules? - Answer✔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? - Answer✔1. Inhalation
2. Ingestion
3. Absorption
1|Page
, ©THESTAR 2024/2025 ALL RIGHTS RESERVED 1:27PM. A+
What must be performed under fume hood? - Answer✔Experiments that are toxic and/or
irritating substances
What is the Material Safety Data Sheet (MSDS)? - Answer✔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. - Answer✔1. chipped rims/tips
2. linear/star shaped cracks
3. severely scratched bases
4. sharp edges
5.supports do not function accurately
5 ways to handle chemicals with caution. - Answer✔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. - Answer✔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. - Answer✔Segments:
1. Red (flammability/top)
2. Blue (toxicity/left)
3. Yellow (reactivity/right)
4. White (specific hazards/bottom).
Degrees of hazard:
0 = none
1 = slight
2 = moderate
2|Page
, ©THESTAR 2024/2025 ALL RIGHTS RESERVED 1:27PM. A+
3 = severe
4 = extreme
T/F: You should pipette by mouth. - Answer✔False
How should you heat liquids? - Answer✔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 - Answer✔False
T/F: Safety showers are used for fires. - Answer✔False, they are only used for chemicals.
7 steps to an accident? - Answer✔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
6. Use stop-drop-roll-yell technique or fire blanket and extinguisher during a fire. If fire cannot
be extinguished, evacuate and pull alarm.
7. Ask instructor to assist with first aid.
After you use a fire extinguisher, what must you do? - Answer✔Label it used.
2 things to do when trying to extinguish a fire? - Answer✔1. Try to turn off the supply of gas to
the fire area
2. Direct the spray from the extinguisher at the base of the flames.
T/F: students can access first aid kit - Answer✔False, only TA's and other personnel.
Public Safety phone number? - Answer✔extension x28999 or 954-262-8999
T/F: You place waste in regular trash. - Answer✔False, you dispose of it in proper bin. I.e.: glass
goes in glass dispose box, biohazards go in biohazard box.
Which variable is which for x axis and y axis? - Answer✔X axis = independent variable
Y axis = dependent variable
What was the purpose of heart rate lab? - Answer✔investigate factors that can change heart
rate.
3|Page
