Why is it important to precisely regulate the pH of blood or other body fluids?
A) Blood functions as an excellent solvent.
B) Blood and other body fluids have a very high heat capacity.
C) Dehydration synthesis of large molecules occurs.
D) Hydrogen ions are extremely reactive.
E) Some organic molecules have polar covalent bonds.
D) Hydrogen ions are extremely reactive.
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Bile secreted by the liver contains the major enzymes for digesting fats.
Answer the following statement true (T) or false (F)
Which tissue is subdivided according to the shape and the arrangement of cells?
a. epithelial tissue b. connective tissue c. muscle tissue d. nervous tissue
The neuromuscular junction consists of ________
A) the axon terminal coming into close proximity to a muscle fiber B) the end branch of a single nerve fiber touching a muscle C) a nerve coming into close proximity to a muscle fiber D) a nerve touching a muscle
How many blood vessels are in the umbilical cord?
a. 1 b. 2 c. 3 d. 4