The nervous system damage symptomatic of untreated PKU is due to
A. too much phenylalanine being transported into nerve cells.
B. too few of the other seven neutral amino acids being transported into nerve cells.
C. accumulation of the breakdown products of phenylalanine in nerve cells.
D. none of these.
E. it is not clearly known.
E
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Gian-Carlo is going to have part of his adrenal cortex removed because of a tumor. After the surgery, he may need ________
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Which feature possessed by most land plants is missing in mosses, which grow low to the ground in damp, shaded areas?
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Mendel's work on inheritance had an immediate influence on the scientific community and theories of inheritance
Indicate whether the statement is true or false