Prior to Darwin's book On the Origin of Species, people thought what about species?
A. Species changed over time because they
were not adapted to their environment.
B. Species were designed already perfectly
adapted to their environment.
C. Species evolved at one point, but no
longer changed because they were not
adapted to their environment.
D. Species changed over time as guided by a
divine creator.
B
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Viruses infecting protists, including algae, have never been detected.
Answer the following statement true (T) or false (F)
Virulence refers to the ability of an organism to cause disease
Indicate whether the statement is true or false.
How does an enzyme work to catalyze a reaction?
A. It supplies the energy to speed up a reaction. B. It lowers the energy barrier needed for reactants to achieve the transition state. C. It lowers the energy of activation of a reaction D. It supplies the energy to speed up a reaction and lowers the energy barrier needed for reactants to achieve the transition state. E. It lowers the energy barrier needed for reactants to achieve the transition state or lowers the energy of activation of a reaction.
Peptide bond formation is catalyzed by an RNA molecule in
A) prokaryotes. B) eukaryotes. C) yeast only. D) cyanobacteria. E) both choices A and B