A unidirectional process where a specific compound released by one organism has a negative effect on another organism is called
A. commensalism.
B. negative cooperation.
C. predation.
D. amensalism.
Answer: D
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Stable integration of foreign DNA into a bacterial host genome is generally accomplished through induced plasmid transformation than by natural uptake of free DNA fragments.
Answer the following statement true (T) or false (F)
You are developing an ELISA test to detect cysts of a parasitic protozoan in stool specimens. Select the following items that would be part of this test.
A. Patient specimens B. Enzyme-labeled antibody against the parasite C. Enzyme-labeled rabbit anti-human-IgG antibody D. Chromogenic enzyme substrate E. Microtiter plate containing wells coated with antibody against the parasite
During S phase, chromosomes are converted to what form?
A) chromatin B) karyotypes C) centrosomes D) sister chromatids
Which type of invasin allows a pathogen to break down a blood clot that the body has generated to trap their spread?
A) neuraminidase B) kinase C) coagulase D) flagella E) collagenase