Single-unit smooth muscle
a. contains an abundance of gap junctions
b. is self-excitable
c. is found in the walls of the digestive, reproductive, and urinary tracts and small blood vessels
d. forms functional syncytia
e. has all of the above characteristics
E
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The transfer of heat between objects by conduction involves direct contact
Indicate whether the statement is true or false
Which of the following chemical reactions best represents the decomposition of ATP?
A. ADP + Pi + energy ? ATP + H2O B. ATP + ADP ? ATP C. ATP + H2O ? ADP + Pi + energy D. ATP + energy ? ADP + H2O E. ADP + ADP + ADP ? ATP
Endurance exercise, such as long-distance swimming, causes a preferential increase in glycolytic enzymes and increased mass of the exercising muscles.
Answer the following statement true (T) or false (F)
Compared to stable isotopes, radioactive isotopes
A. lose or gain electrons. B. lose or gain neutrons. C. emit energy.