Multiple Choice
Plates that have only ampicillin-resistant bacteria growing include which of the following?
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1. Introduction to Microbiology
Members of the Bacterial World
Multiple Choice
Which of the following bacteria use their flagella to invade mucus membranes and cause infections?
A
Staphylococcus aureus
B
Helicobacter pylori
C
Streptococcus pneumoniae
D
Bacillus anthracis
Verified step by step guidance1
Step 1: Understand the role of flagella in bacterial motility. Flagella are whip-like structures that enable bacteria to move, which can be crucial for invading host tissues such as mucus membranes.
Step 2: Review the characteristics of each bacterium listed. Identify which bacteria possess flagella and are known for motility-related invasion.
Step 3: Recall that Staphylococcus aureus and Streptococcus pneumoniae are generally non-motile and do not use flagella for invasion.
Step 4: Recognize that Bacillus anthracis has flagella but primarily causes infection through spores rather than motility-based invasion of mucus membranes.
Step 5: Note that Helicobacter pylori is a motile bacterium with flagella that specifically uses them to penetrate the mucus lining of the stomach, facilitating infection.
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