Which of the following is not true of the process of nonsense-mediated mRNA decay?
A. Its function is to destroy mRNA molecules with premature stop codons.
B. The participation of the ribosome is not required.
C. It requires the marking of the mRNA before the mRNA is exported to the cytoplasm.
D. It involves the removal of the 5' cap of the mRNA.
B
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Of the scientific disciplines listed, which is the least directly relevant to the study of clinical microbiology?
A. Ecology B. Microscopy C. Biochemistry D. Physiology E. Immunology
Which hormone is most similar in amino acid structure to chicken vasotocin?
A. antidiuretic hormone B. aldosterone C. angiotensin II D. growth hormone E. oxytocin
Which enzyme is responsible for adding complementary DNA bases to an exposed DNA strand?
A) DNA helicase B) DNA polymerase C) DNA ligase D) DNA peptidase
Rocky Mountain spotted fever
A. is seen in highest numbers along the west coast. B. is transmitted by Ixodes ticks. C. has symptoms that include fever, headache and rash. D. never has severe complications. E. All of the choices are correct.