What speeds up a reaction without being changed during the process?
a. enzymes
b. metabolism
c. denaturation
d. condensation
e. metabolism
a
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________ aid in the assembly of some biomolecules.
Fill in the blank(s) with the appropriate word(s).
IL-2 is a growth factor that acts on
A) embryonic cells. B) T lymphocytes. C) macrophages. D) muscle cells. E) epithelial cells.
Which of the following combinations could result in Rh incompatibility?
a. Rh-positive mother, Rh-negative father b. Rh-positive mother, Rh-positive father c. Rh-negative mother, Rh-positive father d. Rh-negative mother, Rh-negative father e. More than one of the above.
The biologist discovered that from 1988 to 1993, the average beak size declined to pre-1981 levels. The reversal in beak size during this 5-year period was most likely related to which of the following events?
a. A loss of food supply for the finches b. The end of the drought c. An increase in drought conditions d. An increase in predators consuming finches