Multiple Choice
Which of the following is also considered a biological hazard, along with parasites, fungi, and bacteria?
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1. Introduction to Microbiology
Members of the Bacterial World
Multiple Choice
Which of the following statements regarding the Salmonella bacterium is correct?
A
Salmonella produces oxygen as a metabolic byproduct during photosynthesis.
B
Salmonella is a Gram-positive, cocci-shaped bacterium found primarily in soil.
C
Salmonella is a Gram-negative, rod-shaped bacterium commonly associated with foodborne illness.
D
Salmonella is an obligate anaerobe that cannot survive in the presence of oxygen.
Verified step by step guidance1
Step 1: Understand the basic characteristics of Salmonella, which is a genus of bacteria known for causing foodborne illnesses.
Step 2: Recall that Salmonella is a Gram-negative bacterium, meaning it has a thin peptidoglycan layer and an outer membrane, which is revealed by Gram staining.
Step 3: Recognize the shape of Salmonella cells; they are rod-shaped (bacilli), not cocci (spherical).
Step 4: Know that Salmonella is a facultative anaerobe, meaning it can survive with or without oxygen, so it is not an obligate anaerobe.
Step 5: Understand that Salmonella does not perform photosynthesis and therefore does not produce oxygen as a metabolic byproduct.
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