When nitrate is used as the final electron acceptor, what two possible compounds might it be reduced to?

How does the study of genetic disorders such as pku biologists understand normal alleles?

2. how does the miller-urey experiment fall short of demonstrating that life can arise from inorganic molecules? explain. a. it doesn't show a leap between a collection of amino acids and a single-celled organism. b. it recreates the conditions that existed at the earth's beginning, but no molecules form as a result. c. it doesn't provide evidence of the formation of amino acids. d. it doesn't show how multicellular organisms developed from unicellular organisms

What is the difference between a scientific hypotheses and a scientific theory?