Members of a biological species CANNOT successfully interbreed with members of other species.
a. true
b. false
Ans: a. true
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Which one of the following can contribute to a protein's tertiary structure?
A. ionic bonding B. van der Waal's forces C. covalent bonding D. hydrogen bonding E. All of these choices are correct.
Contractions of the stomach muscles ____
a. decrease following a heavy meal b. move chyme to the small intestine c. begin the digestion of protein d. begin the digestion of lipids e. close the pyloric sphincter
A sample of single stranded RNA was found to have a cytosine content of 22%. What is the expected proportion of guanine in this RNA?
a. 22% b. 28% c. 44% d. cannot be determined from this information
Infection with certain viruses may lead to the development of type I diabetes
Indicate whether the statement is true or false