Describe the conceptual basis for constructing biochemical pathways using nutrient supplement experiments with Neurospora
What will be an ideal response?
The substance that when added to minimal medium "cures" the largest number of strains must be toward the end of the pathway. A supplement that fails to "cure" many strains must be early in the pathway.
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When in its life cycle does a B cell first exhibit its particular surface antigen receptor?
A) after the memory cell giving rise to it divides B) before it ever encounters an antigen C) after it encounters several antigens D) after it encounters a single antigen
What is the temperature used for the extension step?
a. 72 °C b. 60 °C c. 94 °C
Medicines are often administered in pill form. In many cases, the active ingredient of the pill (the drug) is joined to another substance by ________. This forms a(n) ________, which is stable in the dry environment of a pill bottle but dissociates under
the wet conditions of the digestive system to release the drug to the body. A) ionic bonds; salt B) hydrogen bonds; base C) ionic bonds; acid D) covalent bonds; salt
Dissolving
What will be an ideal response?