An ion that is a necessary component of high-energy compounds and nucleic acids and a structural component of bone is the ________ ion
A) chloride
B) sulfate
C) phosphate
D) bicarbonate
E) iodide
C
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The structure in the cell that controls most of the activities of the cell is the:
a. cilia b. nucleus c. nucleolus d. ribosomes
In a chemical reaction where an electron is exchanged from one reactant to another, the structure that loses an electron is
A. reduced. B. analyzed. C. catalyzed. D. oxidized.
Select the correct statement about lymphocytes
A) The two main types are T cells and macrophages. B) T cells are the precursors of B cells. C) T cells are the only form of lymphocyte found in lymphoid tissue. D) B cells produce plasma cells, which secrete antibodies into the blood.
A/an ____________ is an instrument used to measure the air taken in and out of the lungs
Fill in the blank(s) with correct word