MCB 2004 L MID-TERM (QUIZZES) QUESTIONS WITH
VERIFIED ANSWERS
Laboratory Safety Rules - Answers - 1. Eating drinking and smoking at handling, contact
lenses, applying cosmetics, and storing food for human use is not permitted in the lab
2. Disinfect your work area before and after of the procedures with disinfectant
3. Bring necessary lab materials to workstation there should be nothing else but the
minimum (lab book, pencile, notebook)
4. Always wash your hands before and after using your workstation with soap and water
in the back or side counter sinks only
5. Follow all safety guidelines
Always practice aseptic technique
7. No the proper fire drill procedure
8. Keep work area clean dispose of all waste materials properly
9. Perform only those laboratory activity is authorized by instructor
10. Where apparel and protective equipment that is appropriate for lab work
11. Immediately report any spells, cards, or other injuries, no matter how seemingly
minor, to the instructor
12. Follow any specific safety procedures provided by your instructor
Any item that came in contact with biological material should be disposed of in this
container - Answers - Biohazard waste
One likely reason you may focus your slide under lower powers, but you are unable to
focus under 40x or 100x - Answers - slide is upside down
Characteristic of an environment or procedure that avoids or is free of contamination by
pathogens - Answers - Aseptic
To heat fix a bacterial smear - Answers - Run slide lengthwise through the Bunsen
burner flame
, The purpose of heat fixing a bacterial smear - Answers - fix specimen onto slide before
staining process starts
The step that makes the Gram stain differential - Answers - Decolorizer
False - Answers - The wearing of open toed shoes is permitted in the lab Tor F
True - Answers - The lab coat is for the protection of the student and must be worn at all
times in the lab T or F
True - Answers - Hands should be washed after entering the room T or F
False - Answers - It is not necessary to wash hands before leaving the room T or F
True - Answers - Food, eating, drinking or applying make-up is not permitted in the lab
as it could be hazardous to your health
True - Answers - The lab bench should be wiped down with disinfectant at the end of
class
False - Answers - I am allowed to take my cell phone to my desk
True - Answers - The only personal things that I should take to my lab bench is my
notepad, writing instrument, manual and atlas
False - Answers - There is no reason to be concerned with the cultures used in lab as
they are all non-pathogenic
False - Answers - Used culture material (plates, swabs, toothpicks) should be disposed
of in the trash
both, base, neck - Answers - You should carry the microscope with _____ hands (one
under the ___ and one around the ___)
clean, lowest, light - Answers - When you first get your microscope and before storage,
you should _____ all parts; always store the 'scope" on the ____ power objective lens;
and also turn the ____ off when the scope is not being used for observation, as well as
for storage
the slide is turned upside down - Answers - If you can focus your slide under the lower
powers, but are unable to focus under the higher powers (40x and oil) , one likely
reason is
ocular - Answers - The eyepiece of a microscope that re-magnifies the image formed by
the objective lens
VERIFIED ANSWERS
Laboratory Safety Rules - Answers - 1. Eating drinking and smoking at handling, contact
lenses, applying cosmetics, and storing food for human use is not permitted in the lab
2. Disinfect your work area before and after of the procedures with disinfectant
3. Bring necessary lab materials to workstation there should be nothing else but the
minimum (lab book, pencile, notebook)
4. Always wash your hands before and after using your workstation with soap and water
in the back or side counter sinks only
5. Follow all safety guidelines
Always practice aseptic technique
7. No the proper fire drill procedure
8. Keep work area clean dispose of all waste materials properly
9. Perform only those laboratory activity is authorized by instructor
10. Where apparel and protective equipment that is appropriate for lab work
11. Immediately report any spells, cards, or other injuries, no matter how seemingly
minor, to the instructor
12. Follow any specific safety procedures provided by your instructor
Any item that came in contact with biological material should be disposed of in this
container - Answers - Biohazard waste
One likely reason you may focus your slide under lower powers, but you are unable to
focus under 40x or 100x - Answers - slide is upside down
Characteristic of an environment or procedure that avoids or is free of contamination by
pathogens - Answers - Aseptic
To heat fix a bacterial smear - Answers - Run slide lengthwise through the Bunsen
burner flame
, The purpose of heat fixing a bacterial smear - Answers - fix specimen onto slide before
staining process starts
The step that makes the Gram stain differential - Answers - Decolorizer
False - Answers - The wearing of open toed shoes is permitted in the lab Tor F
True - Answers - The lab coat is for the protection of the student and must be worn at all
times in the lab T or F
True - Answers - Hands should be washed after entering the room T or F
False - Answers - It is not necessary to wash hands before leaving the room T or F
True - Answers - Food, eating, drinking or applying make-up is not permitted in the lab
as it could be hazardous to your health
True - Answers - The lab bench should be wiped down with disinfectant at the end of
class
False - Answers - I am allowed to take my cell phone to my desk
True - Answers - The only personal things that I should take to my lab bench is my
notepad, writing instrument, manual and atlas
False - Answers - There is no reason to be concerned with the cultures used in lab as
they are all non-pathogenic
False - Answers - Used culture material (plates, swabs, toothpicks) should be disposed
of in the trash
both, base, neck - Answers - You should carry the microscope with _____ hands (one
under the ___ and one around the ___)
clean, lowest, light - Answers - When you first get your microscope and before storage,
you should _____ all parts; always store the 'scope" on the ____ power objective lens;
and also turn the ____ off when the scope is not being used for observation, as well as
for storage
the slide is turned upside down - Answers - If you can focus your slide under the lower
powers, but are unable to focus under the higher powers (40x and oil) , one likely
reason is
ocular - Answers - The eyepiece of a microscope that re-magnifies the image formed by
the objective lens
