Which of the following is not a complementary base pair usually found in DNA molecules?
A. Adenine-uracil
B. Guanine-cytosine
C. Adenine-thymine
D. All of the choices are correct.
Answer: A
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A logical consequence of the second law of thermodynamics could be stated, ___.
A. every chemical reaction must increase the total entropy of the universe. B. energy can be transferred or transformed, but it cannot be created or destroyed. C. if the entropy of a system increases, there must be a corresponding decrease in the entropy of the universe. D. if there is an increase in the energy of a system, there must be a corresponding decrease in the energy of the rest of the universe. E. every energy transfer requires activation energy from the environment.
A horizontal overlap of the maxillary teeth creating a protrusion is an
a. openbite b. overbite c. overjet d. crossbite.
The ____________________ is the neuron extension that receives information from other neurons. Fill in the blank(s) with the appropriate word(s)
Which of the following is the best description of an atom's physical structure?
A) An atom is a solid mass of material. B) The particles that form an atom are equidistant from each other. C) Atoms are little bubbles of space with mass concentrated at the center of the bubble. D) Atoms are little bubbles of space with mass concentrated on the outside surface of the bubble.