Non-virulent bacteria can be prevented from being transformed into virulent bacteria if the debris from heat-killed virulent bacteria is first treated with: (choose all that apply)
A. DNase.
B. RNase.
C. protease.
D. no enzyme.
Answer A
Biology & Microbiology
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How long does it take for the primary immune response to kick in after the first exposure to an antigen?
a. 2 weeks b. 3 - 4 days c. 2 months d. 6 weeks e. 12 hours
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One goal of pedigree analysis is to discover whether the gene in question is located on an X or a Y chromosome or on
a(n) ____________________.Fill in the blank(s) with the appropriate word(s).
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Which function earlier in development: maternal-effect genes or zygotic genes?
What will be an ideal response?
Biology & Microbiology
A protistan engulfs a macromolecule via a vesicle. Which organelle could fuse to this vesicle and aid in breaking down this molecule?
a. Lysosome b. Vacuole c. Smooth ER d. Ribosome
Biology & Microbiology