The myosin filaments of a sarcomere are attached to the Z line by an elastic protein
Indicate whether the statement is true or false
TRUE
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What is the most important source of heat for the body?
a. internal heat production b. heat gain from the external environment c. respiration d. exercise e. eating
Milk and other exocrine secretions contain which of the following immunoglobulins?
a. IgM b. IgA c. IgG d. IgE e. IgD
Peeper frogs freeze during the winter. As they begin to freeze, their livers break down glycogen and release glucose into the blood, which can then be taken up into cells. This provides a benefit to the frog in that
a. plasma glucose acts as a cryoprotectant by lowering the freezing point of the extracellular fluid. b. cellular glucose acts as a cryoprotectant by lowering the freezing point of the intracellular fluid. c. cellular glucose is readily available for glycolysis once the frog thaws. d. all of these. e. none of these.
What is considered a normal white blood cell count?
A. 3,540-9,060/mm3 of blood B. 4.00-5.20 million/mm3 of blood C. 540-9,060/mm3 of blood D. 165,000-415,000/mm3 of blood