Normal bacterial flora are considered part of innate immunity because they produce:
a) antibodies
b) bacteriocins
c) cytokines
d) histamine
Ans: b) bacteriocins
Biology & Microbiology
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What type of organism is in this picture?
1.bivalves
2.barnacles
3.plankton
4.sea cucumber
The stage of viral replication in which the new viruses leave the host cell is:
a. Release b. Attachment c. Penetration d. Synthesis e. Assembly
Biology & Microbiology
Health workers working with diphtheria commonly receive a serum with antibodies against the pathogen. What type of immunity would this be?
a. active, natural immunity b. passive artificial immunity c. active, artificial immunity d. passive, natural immunity
Biology & Microbiology
A (Coulter/Petroff-Hauser chamber/spectrophotometer) counter is used to count cells on a light microscope
What will be an ideal response?
Biology & Microbiology