The codon for phenylalanine is UUU. Which of the following codons also most likely encodes for phenylalanine?
A) AAA
B) CUU
C) AUG
D) AUU
E) UUC
Answer: E
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Mr. Johnson was becoming slightly deaf. To test his hearing, his doctor held a vibrating tuning fork tightly against Mr. Johnson's jaw. This sent vibrations through the bones of the skull, setting the fluid in the cochlea in motion. Mr. Johnson could hear the tuning fork this way, but not when it was held away from the skull a few inches from his ear. Where was the hearing problem most likely to
be? A. auditory cortex of Mr. Johnson's brain B. auditory nerve leading to Mr. Johnson's brain C. hair cells in the cochlea D. tympanum or the bones of the middle ear E. fluid of the cochlea
Humans incorporate nitrogen into their bodies
a. by nitrification. b. through ammonification. c. by assimilation and biosynthesis. d. via denitrification. e. by the process of decomposition.
_________ are the result of B cell activation and secrete specific antibody. They are large, specialized, and the most numerous of B cell progeny.
A) TH cells B) B cells C) Plasma cells D) Mast cells
Eudicot embryos transfer nutrients from endosperm to their two __________.
Fill in the blank(s) with the appropriate word(s).