Which of the following statements cannot be tested by science?
A. Male lions sleep 20 hours a day.
B. It is wrong that male lions kill baby lions when taking over a new pride.
C. Male lions have brown manes.
D. All statements can be tested by science.
Answer: B
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If she moves the promoter for the lac operon to the region between the beta galactosidase (lacZ) gene and the permease (lacY) gene, which of the following would be likely?
A) The three structural genes will be expressed normally. B) RNA polymerase will no longer transcribe permease. C) The operon will still transcribe the lacZ and lacY genes, but the mRNA will not be translated. D) Beta galactosidase will not be produced. E) The cell will continue to metabolize but more slowly.
When individuals have mitochondrial disorders, why are the skeletal and heart muscles and the brain most often affected?
a. They are the most important organs. b. They have the highest energy needs. c. They are generally very fragile. d. They have fewer mitochondria in the cell. e. They are the most complex organs.
If systemic blood pressure were to increase, and no other changes occur, what would happen to urine production?
1.It would increase in volume. 2.It would decrease in volume. 3.The volume would not change. 4.The volume would remain the same, but frequency would increase.
Genetic drift should have a bigger effect on the evolution of small populations.
a. true b. false