| Term 
 
        | Antibacterials and antimicrobials |  | Definition 
 
        | Substances that inhibit bacterial growth or kill bacteria and other microorganisms. |  | 
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        | Term 
 | Definition 
 
        | Drugs that inhibit the growth of bacteria. |  | 
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        | Term 
 | Definition 
 
        | Drugs that kill bacteria. |  | 
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        | Term 
 | Definition 
 
        | Natural resistance to microorganisms. |  | 
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        | Term 
 | Definition 
 
        | Caused by prior exposure to the antimicrobial. |  | 
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        | Term 
 | Definition 
 
        | Infections acquired while patients are hospitalized. |  | 
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        | Term 
 | Definition 
 
        | Resistance that occurs between antimicrobial drugs that have similar actions, such as penicillins and cephalosporins. |  | 
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        | Term 
 
        | Narrow-spectrum antibiotics |  | Definition 
 
        | Antibiotics that are primarily effective against one type of organism. |  | 
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        | Term 
 
        | Broad-spectrum antibiotics |  | Definition 
 
        | Antibiotics that can be effective against both Gram-negative and Gram-positive organisms. |  | 
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        | Term 
 | Definition 
 
        | Occurrence of a secondary infection when the normal flora of the body is disturbed. |  | 
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        | Term 
 
        | Hypersensitivity and superinfection |  | Definition 
 
        | What are the two most common adverse reactions to penicillin? |  | 
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        | Term 
 | Definition 
 
        | Antibody proteins such as IgG and IgM. |  | 
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        | Term 
 | Definition 
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