In mRNA codons: UUU = phenylalanine, GUU = valine, UAU = tyrosine, UGU = cystine, GGU = glycine. If the third amino acid in a protein were valine, the codon sequence for that amino acid would be
A. UAU.
B. GGU.
C. UUU.
D. GUU.
D. GUU.
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Miller and Urey's experiment was ground breaking because
A. This was the first example of an experiment being used that inserted oxygen into the prebiotic soup. B. This was the first attempt to apply scientific experimentation to the quest of understanding the origin of life. C. They hypothesized what could have been the first molecules formed, but they could not demonstrate this in a scientific experiment. D. This was the last experiment that used boiling water as a trigger mechanism for the production of macromolecules. E. This was the first experiment based on the theory that organic carbon actually arrived from outer space.
Which of the following concepts best describes the wide variety of dog species we observe, ranging from the domesticated golden retriever or the basset hound, to the wild dogs of Africa, to foxes?
a. evolution b. taxonomy c. special creation d. preadaptation e. inheritance of acquired characteristics
The reason why twelve species of fruit-eating
pigeons can survive in Papua New Guinea’s tropical rain forests is related to a. mutualistic associations. b. commensalism. c. resource partitioning. d. mutualistic associations and resource partitioning e. mutualistic associations, commensalism, and resource partitioning.
________ refers to a structure of a protein in which two or more polypeptide chains bind together to form a functional protein
Fill in the blank(s) with correct word