Carbon, in the form of carbon dioxide (CO2), enters the atmosphere in several ways. Which of the following is NOT a process by which carbon dioxide enters the atmosphere?
A) cellular respiration of plants
B) transpiration by plants
C) respiration by oxygen-breathing animals
D) burning of fossil fuels, such as coal and oil
Ans: B) transpiration by plants
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Which gas is increasing in the atmosphere and threatening the world with the greenhouse effect?
a. carbon dioxide b. carbon monoxide c. ozone d. fluorocarbon e. oxygen
The first organism produced as a transgenic organism was
A. a virus. B. corn. C. bread yeast. D. Dolly, the cloned sheep. E. a bacterium.
A genetic test to detect predisposition to cancer would likely examine the APC gene for involvement in which type(s) of cancer?
A) colorectal only B) lung and breast C) lung only D) lung and prostate
Different, or alternative, forms of the same gene are called
A) alleles. B) genetomorphs. C) chromatids. D) homologous. E) mutants.