Who formulated the hypothesis that certain chemicals could kill microbes without harming humans was the foundation for chemotherapy?
A. Ehrlich
B. Koch
C. Gram
D. Lister
E. Pasteur
Answer: A
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A bacterium is infected with an experimentally constructed bacteriophage composed of the T2 phage protein coat and T4 phage DNA. The new phages produced would have _____
A) T2 protein and T4 DNA. B) T2 protein and T2 DNA. C) T4 protein and T4 DNA. D) T4 protein and T2 DNA.
The acceleration of microbiological processes by the addition of known active microorganisms to soils, waters, or other complex systems is called ________.
What will be an ideal response?
What benefits would cause an athlete to risk taking erythropoietin or a similar drug?
What will be an ideal response?
Which kind of T cells regulate the immune response by producing stimulatory lymphokines?
A. cytotoxic T cells (TC) B. suppressor T cells (TS) C. helper T cells (TH) D. memory T cells (TM)