객관식
Which of the following bacteria is commonly associated with the spoilage of food?
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1. Introduction to Microbiology
Members of the Bacterial World
객관식
Which of the following best describes the role of gastrointestinal (GI) bacteria in the human body?
A
They function only in oxygen production.
B
They aid in digestion and synthesis of certain vitamins.
C
They are always pathogenic and cause disease.
D
They prevent absorption of nutrients.
검증된 단계별 안내1
Step 1: Understand the role of gastrointestinal (GI) bacteria by considering their interaction with the human body, especially in the digestive system.
Step 2: Recognize that GI bacteria are mostly beneficial and contribute to breaking down complex food substances that the human digestive enzymes cannot process alone.
Step 3: Know that these bacteria synthesize certain vitamins, such as vitamin K and some B vitamins, which are essential for human health.
Step 4: Eliminate incorrect options by recalling that GI bacteria do not produce oxygen, are not always pathogenic, and do not prevent nutrient absorption; rather, they support nutrient absorption.
Step 5: Conclude that the best description of GI bacteria's role is that they aid in digestion and synthesis of certain vitamins, highlighting their beneficial symbiotic relationship with the host.
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