Which of the following scientists proposed that geologic change occurred gradually due to small changes accumulating over long periods of time?
A. Georges-Louis Leclerc
B. Erasmus Darwin
C. Jean-Baptist's Lamarack
D. James Hutton
D. James Hutton
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Under what condition is the AraC protein an activator?
A) The AraC protein is an activator when it is bound to glucose. B) The AraC protein is an activator when it is bound to lactose. C) The AraC protein is an activator when it is bound to arabinose. D) The AraC protein is an activator when it is bound to cyclic AMP. E) The AraC protein is an activator when it is bound to any sugar molecule.
The smallest type of genetic change that can occur within a given gene is called _______ an example of this phenomenon occurs with ___________.
A. gene transfer; chromosomal deletion. B. single-nucleotide polymorphism; the ?-globin gene. C. synaptic transfer; mitosis. D. double-nucleotide polymorphism; phenylketonuria. E. All of these are correct.
What might be the advantage to an ancestral cell if it maintained a photosynthetic bacterium within its cytoplasm rather than digest it?
A. It could now live in a highly oxygenated environment. B. It could now utilize hydrogen sulfide as an energy source. C. It could now use glucose as an energy source. D. It could now use photosynthesis to make its food.
The molecule that carries amino acids during translation is ____
a. DNA b. rRNA c. mRNA d. tRNA e. RNA polymerase