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Laboratory Safety — Quiz Answers

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1
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Mario at lab table A needs a pair of forceps (tweezers). Max at lab table B tosses Mario a pair. In terms of laboratory safety, which best describes Max’s behavior?

A
It shows proper handling of equipment.
B
It demonstrates a lack of planning.
C
It is unsafe and can result in someone getting hurt.
D
It is safe and appropriate.
2
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Maribel brings her backpack to the lab. She is also given a set of lab materials. What is the safest way for Maribel to organize these items in the lab?

A
Both the personal items and the lab materials should be arranged in the center of the table.
B
The personal items should be off the table, and the lab materials should be placed neatly away from the edge of the table.
C
The lab materials should be in the center of the table, and the personal items should be on the edge of the table.
D
Both the personal items and the lab materials should be arranged neatly along the edge of the table.
3

Lloyd’s lab partner is looking down into a test tube while he heats the contents by using a flame. Which action should Lloyd recommend to his partner if heating must continue?

A
Cover the opening of the test tube so that no materials can boil out of it.
B
Wear safety goggles while looking into the opening of the test tube.
C
Put the test tube in a hot water bath so that no water can enter its opening.
D
Move the test tube so that the opening is pointing away from all students.
4

Which action is an aseptic technique that would reduce the chance of bacteria on a lab table contaminating a lab notebook?

A
covering the surface of the lab table with paper towels
B
wiping off the surface of the lab table with a disinfectant
C
wearing protective gloves when touching the lab table
D
tying back long, loose hair before writing in the lab notebook
5

Which statement describes how to appropriately handle live earthworms in a lab investigation?

A
Press the ends of the earthworms firmly against the table to keep them still.
B
Hold onto earthworms tightly with metal tweezers.
C
Pick up earthworms gently with moist hands.
D
Place individual earthworms on the lab table while setting up equipment.
6

A student uses paper towels to clean up a small chemical spill in the lab. Where should the dirty paper towels be placed?

A
in the hazardous waste container
B
in the chemical waste container
C
in the lab sink
D
in the wastebasket
7

Which list best describes what should be worn by students in a biology lab where pouring chemicals into beakers is involved?

A
a long-sleeved shirt, safety glasses, protective gloves, and closed shoes
B
a lab coat, safety glasses, protective gloves, and closed shoes
C
a long-sleeved shirt, safety glasses, protective gloves, and sandals
D
a lab coat, safety glasses, protective gloves, and sandals
8

Which safe practice is part of using aseptic technique?

A
folding and tying up the electric cord of a microscope before carrying it
B
using a safety shower to wash chemicals off skin and clothing
C
using tongs and a hot mitt to remove a beaker of hot water from a hot plate
D
wearing protective gloves when transferring bacteria and fungi to slides
9

Which is a safe practice for handling chemicals in a lab investigation?

A
Dispose of all chemicals down the sink with a lot of water.
B
Place beakers of chemicals near the edge of the counter.
C
Identify chemicals by smelling and tasting them.
D
Tell the teacher about any chemicals that were spilled in a lab.
10

Which safety practice should always be done at the beginning and the end of a microbiology lab?

A
putting on safety gloves
B
sweeping the floor
C
securing loose clothing
D
washing hands

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