A governmental group reviewed the benefits of building a hydroelectric dam on a river in Alaska and determined that the dam would pay for itself within 20 years by producing electricity. However, a conservation group lobbied against the project because of the potential damage it would cause to the environment. Each group issued the following public statements on the project. Which of the statements reflect an environmental benefit of this project?
A) The government will collect higher taxes on sales made to the employees working on building the dam.
B) Land loss due to flooding behind the dam will wipe out a large section of forest and riverbank habitat.
C) Businesses will spend more money in electrical costs the first two years due to changes in equipment.
D) A species known to be endangered will increase significantly in numbers due to changes in the environment.
Ans: D) A species known to be endangered will increase significantly in numbers due to changes in the environment.
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In a chemical reaction, the standard free energy change (?G°') is calculated to be 3.67 cal/mol. What can be said of the chemical reaction?
A) The reaction is at equilibrium under standard conditions. B) The reaction goes spontaneously to the right under standard conditions. C) The reaction is not spontaneous under standard conditions. D) Products predominate over reactants at equilibrium under standard conditions. E) There can be no reaction.
Germline engineering would
a. alter a cloned embryo's genetic makeup. b. replace defective genes. c. insert missing genes. d. modify damaged genes. e. all of these.
Which of the following is the best definition of polyploidy?
a. the variety of forks in an evolutionary tree b. the acquisition of multiple copies of each chromosome c. multiple speciation events that occur rapidly d. an event caused by genetic divergence
Amniocentesis is a procedure that is normally used
A. to change the sex of the fetus. B. to reduce the risk of genetic disease. C. for nourishing the fetus. D. for gene therapy. E. for diagnosis of genetic disorders.