Acetylcholine is a neurotransmitter released from motor neurons
____________________ Indicate whether the statement is true or false.
True
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The concept of a species was proposed by
A. Charles Darwin. B. John Ray. C. Carolus Linneaus. D. Erasmus Darwin. E. George Cuvier.
The biggest problem facing coastal habitats is not dumping but:
a. overfishing. b. river runoff. c. development. d. offshore oil spills. e. nuclear power plant leakage.
Which of the following is true of embryo cloning?
a. It occurs all the time in nature. b. It involves the genetic contribution of only one parent. c. It produces identical offspring. d. “Artificial twinning” is a laboratory application of the process. e. All of these are true.
Smooth muscles are NOT
a. striated and voluntary. b. isolated, spindle-shaped cells. c. found in the walls of hollow structures such as blood vessels and the stomach. d. involuntary and nonstriated. e. associated with the parasympathetic nervous system “rest and digest” phase