Chronic inflammation caused by infectious agents can increase the chance of cancer because immune cells fighting the infection
A) induce conversion of the RAS proto-oncogene to the oncogene in neighboring cells.
B) secrete metalloproteinases that digest holes in the surrounding extracellular matrix.
C) secrete phorbol esters.
D) secrete an oncogenic form of a growth factor.
E) produce mutagenic oxygen-free radicals.
Answer: E
You might also like to view...
A deleterious mutation in recA results in
A) a decrease in specific recombination. B) a decrease in homologous recombination. C) an increase in homologous recombination. D) no change in either general or specific recombination.
Comparing transmission electron microscopy with scanning electron microscopy, the following statement is true.
A. Transmission EM can provide good images of bacteria but not viruses. B. Transmission EM is used for internal detail of cells and subcellular structures. C. Transmission EM requires dyes. D. Transmission EM gives detail of the external architecture of cells.
The site of gravity reception in roots is the:a
root apical meristem. b. periderm. c. root epidermis. d. root cap. e. root hair
The midrange of an array of phenotypes is favored in ________.
A. genetic drift B. stabilizing selection C. gene flow D. disruptive selection E. directional selection