AnswersBiology - Semester 1 PathwaysLaboratory Safety

Laboratory Safety Answers

4 verified answers1 views
1
Free Preview

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

A
Pick up earthworms gently with moist hands.
B
Place individual earthworms on the lab table while setting up equipment.
C
Press the ends of the earthworms firmly against the table to keep them still.
D
Hold onto earthworms tightly with metal tweezers.
2
Free Preview

Which action is designed to increase the safety of a person carrying a microscope from one place to another?

A
putting a cover over the microscope
B
setting the microscope to the high-power objective position
C
wrapping the electrical cord around the arm of the microscope
D
raising the stage of the microscope until it touches the objective
3

Before viewing prepared slides under a microscope, students should review the safety rules for

A
wearing safety goggles and lab aprons.
B
preventing and cleaning up chemical spills.
C
cleaning up and disposing of broken glass.
D
putting out fires and cleaning up after them.
4

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 lab sink
B
in the wastebasket
C
in the chemical waste container
D
in the hazardous waste container
5

Which safe practice is part of using aseptic technique?

A
using a safety shower to wash chemicals off skin and clothing
B
wearing protective gloves when transferring bacteria and fungi to slides
C
folding and tying up the electric cord of a microscope before carrying it
D
using tongs and a hot mitt to remove a beaker of hot water from a hot plate
6

Lee and Celia are lab partners. While Celia pours a chemical into a graduated cylinder, some of the chemical splashes onto her arm. What should happen next?

A
Lee should continue working with Celia after helping wipe off her arm.
B
Lee should tell the teacher what happened to Celia when he leaves the lab.
C
Lee should tell the teacher while Celia washes her arm with soap and water.
D
Celia should stand in the safety shower while Lee tells the teacher.
7

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
Wear safety goggles while looking into the opening of the test tube.
B
Cover the opening of the test tube so that no materials can boil out of it.
C
Move the test tube so that the opening is pointing away from all students.
D
Put the test tube in a hot water bath so that no water can enter its opening.
8

Jacob is unsure about how to focus a slide under the microscope. What would be Jacob’s best course of action?

A
Ask the teacher for instructions.
B
Ask his lab partner for instructions.
C
Watch another student, and copy what he or she does.
D
Use the trial-and-error method until the slide focuses.
9

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 sandals
B
a long-sleeved shirt, safety glasses, protective gloves, and closed shoes
C
a lab coat, safety glasses, protective gloves, and sandals
D
a lab coat, safety glasses, protective gloves, and closed shoes
10

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

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

Did you find these answers helpful?

More from this Course

Quiz
1 verified answers

Collecting and Organizing Data

Quiz
1 verified answers

Laboratory Safety

Assignment
5 verified answers

Warm-Up