What is the purpose of a biosafety cabinet or inoculation unit in the laboratory?
A. Produce an updraft to force airborne contaminants away
B. Protect personnel against biohazardous or infectious agents
C. Count the number of colonies of microorganisms
D. Aseptic transfer of microbial culture
Select your answer:
Topics:
Vocabulary for Organisms in Ecosystems Science Reproduction Transplantation Immunology Mitosis for Mya Bacteria, Viruses, and Fungi Tongue and Skin Genetic Diseases Multicellular Organisms Biodiversity Human Reproduction Laparoscopic Surgery Tissues Vet Science Terms Healthcare Systems and Settings Lung & Breathing FitnessOther quiz:
The Cardiovascular System OCR A-level › ViewWhich is the correct definition of bradycardia?
A. a decrease in resting heart rate below 60 beats per minute
B. the thickening of the muscular wall of the heart so it becomes bigger and stronger
C. An increase in stroke volume and cardiac output
D. a decrease in blood pressure
Nervous System and Special Senses › View
Which one of the following is the correct sequence of events that follows a threshold potential:
1. the membrane becomes depolarized
2. sodium channels open and sodium ions diffuse inward
3. the membrane becomes repolarized
4. potassium channels open and potassium ions diffuse outward while sodium is actively transported out of the cell
.
A. 3,2,4,1
B. 2,1,4,3
C. 2,1,3,4
D. 1,2,4,3