Excess transferrins are removed in the ________, where the iron extracted from heme molecules is stored in special protein-iron complexes.
A) liver and thymus
B) liver and spleen
C) thymus and bone marrow
D) spleen and bone marrow
E) thymus and spleen
B) liver and spleen
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?Water expands when it is heated.
Answer the following statement true (T) or false (F)
Express 3600 inches as yards.
A. 50 B. 75 C. 88 D. 100
The three things necessary for combustion are
A) air, gas, and a combustion chamber B) gas, air, and a burner C) fuel, heat and carbon dioxide D) fuel, oxygen, and heat
What is a low water cut out?
A) it is an operating control that shuts off the boiler at the end of every operating cycle when it senses that the boiler has used up its supply of water B) it is a safety device that shuts off the boiler if the water level is low C) it is an operating control that energizes the water fill solenoid at the end of an automatic blow-down cycle D) it is a hand valve installed near the bottom of the boiler that is used for filling and servicing the boiler