Reductive dechlorination is a process in which
A) the number of chlorine atoms present is reduced by oxygenase enzymes.
B) chlorinated organics are used as terminal electron acceptors in anaerobic respiration.
C) carbon dioxide is the final end product.
D) xenobiotics are cometabolized with other reductive reactions.
Answer: B
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Which of the following is a correct matching of the researcher with their discovery?
A. Pauling provided information on primary structure in biological molecules. B. Franklin suggested that DNA was a helix with more than one strand and that there were about 10 bases per turn of the DNA C. Watson and Crick collected a large amount of X-ray data on the structure of DNA. D. Chargaff demonstrated that the adenine and cytosine bases and the uracil and guanine bases interacted in some manner.
A new mRNA can pass through the pores of the nuclear membrane into the cytoplasm only if ________
a. it has been phosphorylated b. it has been processed c. motor proteins attach to a base sequence and link the molecule to cytoskeletal elements d. proteins attach to a base sequence near the poly-A tail and temporarily block translation
The kingdom Protista is
A. not considered a valid phylogenetic unit. B. composed of organisms that are very similar to one another. C. only contains single-celled organisms. D. not ecologically important.
What is the term for the sum total of genetic material of an organism
What will be an ideal response?