The cell responsible for producing a rapid antibody response against a foreign protein when it is encountered years after the first encounter is a
A. memory T cell.
B. killer T cell.
C. memory B cell.
D. plasma cell.
Answer: C
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________ are cytotoxins produced by Tc cells that cause apoptosis
A) Perforins B) Granzymes C) Phagocytes D) Macrophages
__________ pathogens obtain resources from living cells, whereas __________ pathogens kill cells before colonizing them
A. Biotrophic; necrotrophic B. Necrotrophic; biotrophic C. All bacterial; all fungi D. All fungi; all bacterial E. Asymptomatic; symptomatic
The protein complex that initiates the process of conjugation following contact between two bacteria is called the _________
A. origin of transfer B. T DNA C. relaxosome D. nucleoprotein
Disturbances to an ecosystem, such as fires and floods, are often seen as negative. Describe a situation where regular disturbances are not only beneficial but are also required to sustain the ecosystem
What will be an ideal response?