Multiple Choice
In bacterial cells, where is penicillin typically secreted during its production by Penicillium species?
56
views
1. Introduction to Microbiology
Introduction to Bacteria
Multiple Choice
The production of beta-lactamases in bacteria is responsible for which of the following?
A
Synthesis of exotoxins
B
Increased bacterial motility
C
Enhanced biofilm formation
D
Resistance to beta-lactam antibiotics
Verified step by step guidance1
Understand the role of beta-lactamases: These are enzymes produced by certain bacteria that can break down beta-lactam antibiotics, such as penicillins and cephalosporins.
Recall the mechanism of beta-lactam antibiotics: They work by inhibiting bacterial cell wall synthesis, specifically targeting the beta-lactam ring structure in these antibiotics.
Recognize that beta-lactamases hydrolyze the beta-lactam ring, rendering the antibiotic ineffective and allowing the bacteria to survive despite the presence of the drug.
Compare the options given: synthesis of exotoxins, increased bacterial motility, enhanced biofilm formation, and resistance to beta-lactam antibiotics.
Conclude that the production of beta-lactamases is directly linked to resistance to beta-lactam antibiotics, as it neutralizes the antibiotic's effect.
Related Videos
Related Practice
