Compare and contrast defined media and complex media. Use specific examples in your
What will be an ideal response?
answer.
Answer: Defined media are prepared by adding individual "pure" chemicals in known quantities. In this way, the medium itself can be explicitly defined. For example, 5 mM NaCl, 3 mM KH2PO4, 1.5 mM NH4Cl, 2.5% glucose, and 3% acetate is a defined medium, because each ingredient added is at a known concentration and the chemicals present are known. Complex media needs only to contain one undefined product to be considered complex or undefined. An example of an undefined medium is 5 mM NaCl, 2.5% tryptone and 2.5% yeast extract, because both tryptone and yeast extract are not individual chemical structures but instead contain an assortment of compounds at unknown (imprecise) quantities.
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Individuals with a genetic variant in the promoter region of the MAOA gene display violent behavior, independent of environmental factors
a. True b. False Indicate whether the statement is true or false
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A) engulf and destroy invading bacteria. B) are located on the surface of the skin. C) destroy body cells that have been invaded by viruses. D) are a type of lymphocyte. E) produce secretions that inhibit the growth of pathogenic microbes.
Which statement is true about the type of light used by plants to make sugar during photosynthesis?
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