You have isolated a bacterium from a contaminated river but you are unable to culture it in the laboratory. Which method could you use to identify the organism.
Answer: Nucleic acid amplification tests
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One square meter of open ocean areas supports more phytoplankton growth than a comparable coastal water area
Indicate whether the statement is true or false
Which of the following is not true of the enzyme–substrate interaction?
A) Many enzymes are extremely specific regarding a substrate. B) Many enzymes cannot recognize a stereoisomer of their substrate. C) Some enzymes accept any of a whole group of substrates. D) Carboxypeptidase recognizes any of the amino acids from the carboxyl end of a polypeptide. E) Cells are often able to carry out metabolic activity with only a handful of enzymes because many are nonspecific.
Progymnosperms had two derived features:a
microphylls and herbaceous tissue. b. microphylls and woody tissue. c. megaphylls and herbaceous tissue. d. megaphylls and woody tissue. e. both megaphylls and microphylls and herbaceous tissue.
Climates characteristic of the Mediterranean region are also common in:
a. Nebraska. b. New York. c. Florida. d. Hawaii. e. California