In a food chain, primary consumers occupy the first trophic level
____________________ Indicate whether the statement is true or false.
False - second
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In the heart of a reptile or amphibian, where would you expect to find oxygenated blood? Select all correct choices
A. in the right atrium B. in the left atrium C. mixed with de-oxygenated blood in a common ventricle D. mixed with de-oxygenated blood in the right ventricle E. Nowhere; oxygenated blood does not travel through the heart of these animals.
The two steps of transcription followed by
translation a. explain the structural complexity of genes. b. describe the flow of genetic information. c. are based upon the role of proteins in controlling life. d. do not explain how genes function. e. explain evolution in terms of molecular biology.
The development of organisms is based on
a. which genes are active in a given cell. b. when the genes function. c. what gene products appear. d. the amount of cellular products generated. e. all of these.
Escherichia coli is a good indicator of fecal contamination of water supplies.
Answer the following statement true (T) or false (F)