A(n) (genome/codon/operon) is a set of prokaryotic genes that are regulated and transcribed as a unit.
Fill in the blank(s) with the appropriate word(s).
operon
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Which of the following characteristics are unique to eukaryotes (i.e., do not occur in either archaea or bacteria)? (Select all correct choices.)
A. the presence of introns in most genes (non -coding stretches of DNA) B. the presence of exons in most genes (coding stretches of DNA) C. the presence of chlorophyll D. the presence of nuclei
In opsonization with IgG, why would it be important that IgG react with the antigen BEFORE a phagocytic cell recognizes the antibody molecule?
A. If the IgG is bound to the phagocyte BEFORE opsonization, it would most likely be ingested by the phagocyte before it could bind to a pathogen (it would be "naked," so to speak). B. Binding of IgG by phagocytes would block the antigen binding sites on the IgG molecules, preventing them from binding to the microbes. C. Binding of IgG by phagocytes changes their conformation-and by changing their protein conformation, their antigen binding sites are changed and they can no longer recognize their specific antigenic epitopes. D. Binding of antibody by phagocytes results in immediate release of protein-destroying enzymes to the outside of the cell. Since antibodies are proteins, they would be destroyed by these enzymes (and would then be unable to bind to their specific antigenic epitopes).
________ is (are) plant based responses to environmental stimuli
a. Root nodules b. Tracheids c. Tropisms d. Photolysis e. Photorespiration
A pharmaceutical company is developing a new drug to treat a rare disease. They need to determine which of the cell's proteins can bind the drug. What tool can help them survey the proteome for drug interactions?
A. Using a monoclonal antibody B. Protein microarray C. ENCODE D. DNA microarray E. SAGE