Question

know and understand the lab safety rules in biology i.

1. ________ if you do not understand a direction or part of a lab procedure, you should

a. figure it out as you do the lab.
b. try several methods until something works.
c. ask the instructor before proceeding.
d. skip it and go on to the next part.

1. ________ after completing an experiment, all chemical wastes should be

a. left at your lab station for the next class.
b. disposed of according to your instructors directions.
c. dumped in the sink.
d. taken home.

1. ________ you are heating a substance in a test tube. always point the open end of the tube

a. toward yourself.
b. toward your lab partner.
c. toward another classmate.
d. away from all people.

Explanation:

🆕 New Concept Discovered: Lab Safety Protocols
Standard procedures to prevent accidents in the laboratory

Step 1: Analyze Question 14

When you do not understand a direction or part of a lab procedure, proceeding without clarification can lead to dangerous mistakes, damaged equipment, or failed experiments.

• A, B, and D involve guessing or ignoring instructions, which violates safety protocols.
• C is the correct action because the instructor is the authority responsible for safety and correct procedures.

Step 2: Analyze Question 15

Chemical wastes cannot be treated like regular trash or poured down the drain because they can be hazardous, corrosive, or toxic to the environment.

• A, C, and D are unsafe and improper disposal methods.
• B is correct because different chemicals require specific disposal methods (such as designated waste containers), which are managed by the instructor.

Step 3: Analyze Question 16

When heating a substance in a test tube, the liquid can suddenly boil or splash out (bumping).

• A, B, and C point the potential hazard directly at a person (yourself, your partner, or a classmate).
• D is correct because pointing the open end away from all people ensures that if any hot liquid splashes out, it does not cause injury.

Answer:

1. C (ask the instructor before proceeding)
2. B (disposed of according to your instructor's directions)
3. D (away from all people)