Component of chlorophyll, activates many enzymes, divalent cation.
Choose the letter of the best match:
A. nitrogen
B. calcium
C. potassium
D. phosphorus
E. magnesium
E. magnesium
Magnesium is necessary for chlorophyll synthesis and it also activates many enzymes.
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An immune complex is defined as
A. antigen combined with antigen. B. antigen combined with antibody. C. antibody combined with antibody. D. complement combined with LPS.
A flatworm lacks:
a. bilateral symmetry b. a true coelom c. mesodermal tissue d. a nervous system e. a solute regulating system
__________ refers to an individual's observable traits. Fill in the blank(s) with the appropriate word(s)
P53 is a ____
a. transcription factor that turns on expression of cell division inhibiting proteins b. protein encoded by an oncogene c. protein that promotes entry into the cell cycle when DNA is undamaged d. hormone used to treat cancer e. growth promoting factor