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A cell gains energy by combining glucose with oxygen in a series of chemical reactions. The products are carbon dioxide and water. What is the source of this energy?
A. the forces that attract protons and neutrons within carbon nuclei
B. the breaking of chemical bonds within the molecules of the reactants
C. the breaking of chemical bonds within the molecules of the products
D. the kinetic energy of oxygen molecules
E. strong forces within the atomic nuclei of the reactants
Answers: 3
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Which of the following substances is not involved in the chemical reaction that pro- duces smog? a. sunlight b. particulate matter c. automotive exhaust d. ozone
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Why is it important to reduce the number of chromosomes in half when forming gametes for sexual reproduction?
Answers: 1
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Plz fast biotechnology is a growing field of applied biology. many crops such as corn have been engineered to be resistant to herbicides. therefore farmers can spray these chemicals to kill weeds growing near the crop without worries of killing the crop itself how does this type of biotechnology work? a. by changing the genetic make up of the crops. b. by causing the crops to kill the weeds. c. by changing the type of crops used. d. by changing the location of the crops.
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