13 Questions
What is the term for microorganisms that colonize people for hours to weeks but do not establish themselves permanently?
Transient flora
Which term is used to describe the microorganisms that inhabit the human body and are usually harmless and beneficial?
Commensals
Where is the resident flora usually found in the human body?
Intestinal tract
What beneficial function do resident flora in the intestine serve?
Synthesizing vitamins K and B
Apart from synthesizing vitamins, what other function do resident flora in the intestine serve?
Aiding in digestion and absorption of nutrients
Which of the following is NOT a portal of entry for infectious diseases?
Muscular system
How do normal flora suppress the growth of many pathogenic bacteria and fungi?
By competing for essential nutrients and receptors
What is the primary role of bacterial biofilms in human infections?
They make it difficult to treat infections as they are persistent
Which primary host defense do bacteria with an outer polysaccharide capsule have a better chance of surviving?
Phagocytosis
Under certain conditions, how can normal flora become pathogenic?
By decreasing in number due to antibiotics
What is the first step of the infectious process according to the text?
Entry of the microorganism into the host
What is the mode of infectious disease transmission involving arthropod bites?
Indirect vector transmission
What is the main role of attachment between microbe and host tissue mainly by the aid of pili?
Facilitating colonization of bacteria at the site of adherence
Test your knowledge on the normal flora - microorganisms inhabiting the human body which are usually harmless and beneficial, but can cause infection under certain conditions. Explore the concepts of resident and transient flora in this quiz.
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