Podcast
Questions and Answers
What is the pH level of the stomach?
What is the pH level of the stomach?
- pH 1 to 3 (correct)
- pH 9 to 10
- pH 7
- pH 6.8 to 8.6
What is the characteristic of the climax community in the human GI tract?
What is the characteristic of the climax community in the human GI tract?
- It is an ecosystem where the host physiology is not influenced
- It is an ecosystem in which progression of species has stopped (correct)
- It is an ecosystem where bacteria are absent
- It is an ecosystem where bacteria outnumber host cells
What is the approximate number of CFU/g of aerobic gram positives in the stomach?
What is the approximate number of CFU/g of aerobic gram positives in the stomach?
- 10^3-10^4 CFU/g
- 10^6-10^7 CFU/g
- 10^8-10^9 CFU/g
- < 10^3 CFU/g (correct)
Which of the following bacteria is not commonly found in the small intestine?
Which of the following bacteria is not commonly found in the small intestine?
What is the main difference between indigenous bacteria and transient bacteria in the GI tract?
What is the main difference between indigenous bacteria and transient bacteria in the GI tract?
What is the effect of dietary factors on the distribution of bacteria in the GI tract?
What is the effect of dietary factors on the distribution of bacteria in the GI tract?
What is a crucial factor that influences the colonization of the human GI tract?
What is a crucial factor that influences the colonization of the human GI tract?
What is a potential benefit of probiotics in relation to lactose?
What is a potential benefit of probiotics in relation to lactose?
In which of the following systems can probiotics have an alternative application?
In which of the following systems can probiotics have an alternative application?
What is a characteristic that should be retained in probiotic strains?
What is a characteristic that should be retained in probiotic strains?
What is a benefit of using non-viable probiotics?
What is a benefit of using non-viable probiotics?
What is the primary mechanism by which probiotic bacteria are thought to give health benefits?
What is the primary mechanism by which probiotic bacteria are thought to give health benefits?
What is the primary function of the large intestine in the digestive system?
What is the primary function of the large intestine in the digestive system?
What type of bacteria are introduced to an infant's gut through breast-feeding?
What type of bacteria are introduced to an infant's gut through breast-feeding?
What is the estimated number of bacterial cells present in the human body?
What is the estimated number of bacterial cells present in the human body?
What is the role of microflora in the large intestine?
What is the role of microflora in the large intestine?
What is the purpose of probiotics in maintaining gut health?
What is the purpose of probiotics in maintaining gut health?
What percentage of bacteria in healthy humans is constituted by 30-40 species of bacteria?
What percentage of bacteria in healthy humans is constituted by 30-40 species of bacteria?
