How is the formation of the peptide bond catalyzed during translation?
a. by aminoacyl-tRNA synthetases
b. by snRNP
c. by peptidyl transferase
d. by RNA polymerase
Ans: c. by peptidyl transferase
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Would you recommend genetic testing for the APOE*4 allele in family members of an Alzheimer disease patient? Why or why not?
What will be an ideal response?
Desmosomes are a type of ____
a. anchoring junction b. cell adhesion molecule c. tight junction d. intermediate filament e. gap junction
You have fractured your bone and your physician is explaining the healing process to you. She tells you that after the blood clot forms, the next step is the development of the callus. Which of the following describes the structure of the callus?
A) spongy bone B) compact bone C) cartilage D) osteoclasts
A sudden loud sound such as an explosion might impair hearing by damaging which of the following?
a. hair cells in the organ of Corti b. the vestubular nerve c. the utricle and saccule d. the otoliths e. the endolymph