What is the purpose of using a Bunsen burner in the practical?
A. To speed up the growth of bacteria
B. To heat the agar plates
C. To sterilize the equipment
D. To create a sterile area
Select your answer:
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Child Growth and Development Basic Structure of the Human Body Neurological Concepts Biodiversity Medication Administration Cell Structure and Function Benefits of Physical Activity Heart and Blood Vessels The Vascular System and Blood Flow Biochemistry/Cells Multicellular Organisms Bacteria, Viruses, Protozoa Fungi Bacteria and Viruses Hele Skeletal System FitnessOther quiz:
Virus and Bacteria › ViewA person who is HIV positive cannot spread the virus.
A. TRUE
B. FALSE
Immunity › View
When activated by the presence of a pathogen some lymphocytes produce antibodies and other lymphocytes act as memory cells.
Which of the following best describes the role of memory cells in the immune system?
A. They store antigens from the pathogen for lymphocytes to use as a template for antibodies in the future.
B. They remember the antigen on the pathogen and tell the lymphocytes how to respond if it is re-encountered.
C. They quickly clone to form a group of phagocytes if the pathogen is re-encountered.
D. They quickly clone to form a group of plasma cells if the pathogen is re-encountered.