Which of the following is not a virulence factor associated with helminths?
A. Thick cuticle to escape detection from the host immune system
B. Secretion of toxins
C. Degradative enzymes to damage host tissue
D. Specialized structures for attachment to host tissues
Answer: B
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Which of the following statements best describes the difference between a dikaryon and a heterokaryon?
A. There is no difference, the two are identical. B. A dikaryotic cell has two nuclei and a heterokaryon has three or more nuclei. C. A dikaryotic cell is diploid and a heterokaryon is haploid. D. A dikaryotic cell is involved in sexual reproduction and a heterokaryon is involved in asexual reproduction. E. A dikaryotic cell is haploid and a heterokaryon is diploid.
Messenger RNAs that contain no stop codons due to a frameshift mutation are eliminated by
A) nonstop decay. B) directed RNase activity. C) nonsense-mediated decay. D) error-mediated repair. E) none of the above
Tendons and ligaments are composed of ________.
Fill in the blank(s) with the appropriate word(s).
Somatic cell mutations are heritable.
Answer the following statement true (T) or false (F)