Which of these diseases cannot be prevented by toxoids?
A) botulism
B) gram-negative septic shock
C) diphtheria
D) tetanus
Ans: B) gram-negative septic shock
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Gene therapy is performed by ____
a. replacing the genomes of an individual with a brand new set of genomes with the goal of treating a genetic defect b. replacing a defective gene in an individual with a normal gene with the goal of treating a genetic disorder c. transferring a mutated gene into an individual with the goal of treating a genetic defect d. transferring a normal or a modified gene into an individual with the goal of treating a genetic defect e. replacing a defective enzyme in an individual with a normal enzyme with the goal of treating a genetic disorder
Which of these is the best description of a virus?
A. chemical complexes of RNA or DNA protected by a protein shell B. a member of the kingdom Virusae C. the smallest bacteria known D. a noncellular living organism E. an invasive cell that cannot stop reproducing
The archegonia of ferns produce
A. sperm. B. pollen. C. eggs. D. spores.
The common bread mold Rhizopus stolonifer belongs to the ________.
A. Basidiomycota B. Glomeromycota C. Ascomycota D. Zygomycota