Monoclonal antibodies
A. are usually of different classes.
B. usually recognize several epitopes.
C. have the same variable regions.
D. are always IgE.
C
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What will be an ideal response?Nucleotide substitutions are mutations that alter the ____________________, but not the ____________________, of
nucleotides in a DNA molecule. Fill in the blank(s) with the appropriate word(s).
The reactivity of an atom depends on the number of
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How pathogenic are alpha toxin–containing clostridia compared to those lacking it, and why?
a. They are less pathogenic, because the alpha toxin is quickly recognized by the immune system, which subsequently rids the body of the pathogen. b. They are less pathogenic, because the beta toxin is more toxic and the clostridia produce only one or the other. c. They are more pathogenic, because the toxin enables the clostridia to lyse healthy human cells and grow/spread further. d. They are more pathogenic, because the toxin is a protective molecule that enablesthem to hide from immune cells.