Superantigens produced by Staphylococcus aureus are a class of antigens that cause non-specific activation of T cells resulting in their activation and massive cytokine release which may harm the host
a. true
b. false
Answer: a. true
Biology & Microbiology
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Water inside xylem is pulled upward by:
a. turgor pressure b. tension c. osmotic gradients d. pressure flow forces e. translocation
Biology & Microbiology
If a normal cell contains 36 chromosomes, how many chromatids are present during alignment? How many strands of DNA? How many genetically unique strands of DNA?
What will be an ideal response?
Biology & Microbiology
DNA fingerprinting can be used to convict criminals, but has had little application in exonerating individuals already convicted
Indicate whether the statement is true or false
Biology & Microbiology
The mordant is applied after the primary dye in the Gram stain
a. true b. false
Biology & Microbiology