Study for the Cengage Microbiology Test with helpful multiple choice questions and detailed explanations. Ace your exam with confidence!

Multiple Choice

An advantage of cephalosporins over penicillins is that they have a shorter duration of action so patients experience fewer side effects. True or False?

Cephalosporins are not defined by a shorter duration of action; many have longer half-lives than penicillins, allowing less frequent dosing. Fewer side effects is not guaranteed and isn’t the main advantage; adverse effects can be similar, and allergic reactions to beta-lactams can occur with both classes. For example, ceftriaxone has a long half-life that supports once-daily dosing, whereas penicillin G often requires more frequent administration. So the statement is false.

Cephalosporins are not defined by a shorter duration of action; many have longer half-lives than penicillins, allowing less frequent dosing. Fewer side effects is not guaranteed and isn’t the main advantage; adverse effects can be similar, and allergic reactions to beta-lactams can occur with both classes. For example, ceftriaxone has a long half-life that supports once-daily dosing, whereas penicillin G often requires more frequent administration. So the statement is false.