A suggested explanation that might be true and is subject to testing by further observations is a(n):
A. experiment.
B. scientific principle.
C. generality.
D. hypothesis.
E. theory.
Answer: D
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Which of the following is MOST accurate regarding cells?
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If bacteria are infected with a bacteriophage and briefly exposed to radioactive uracil, what results would you expect to see immediately after exposure?
A) radioactive mRNA in the cytoplasm B) radioactive mRNA in the nucleus C) radioactive DNA in the cytoplasm D) radioactive DNA in the nucleus E) radioactive proteins in the nuclear membrane
The bile from the liver
A. contains enzymes. B. is stored in the pancreas. C. emulsifies fats. D. is emptied into the stomach.
The DNA of humans and chimps differs by about 10%
Indicate whether the statement is true or false