The typical coloration of the feces is due to
a. bile salts
b. undigested cellulose
c. aqueous NaHCO3 secretion
d. modified bilirubin
e. disintegrated epithelial cells
D
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The proteins in the electron transport chain transport H+
A. from the cytosol to the matrix. B. from the matrix to the outer compartment. C. from the outer compartment to the cytosol. D. from the outer compartment to the matrix. E. from the cristae to the matrix.
Simply put, antibodies are molecules on the lookout for antigens.
Answer the following statement true (T) or false (F)
Blood vessel diameter is regulated by all of the following EXCEPT ________.
A. nitric oxide B. endothelin C. bradykinin D. platelet-derived growth factor
Invertebrates possess a
A) Solid ventral nerve cord. B) Hollow ventral nerve cord. C) Solid dorsal nerve cord. D) Hollow dorsal nerve cord.