Question

how does the substrate for amylase differ from the substrate for lactase?

how are the substrates similar?

where does lactose hydrolysis occur for lactase persistant individuals?

where does lactose hydrolysis occur for lactose intolerant individuals who have consumed probiotic bacterial microflora?

Answer 1

Answer:

• Substrate of Amylase is Starch which is a polysaccharides and Lactase acts on lactose which is a disaccharide.
• The only similarity between lactose (glucose+ galactose) and starch (large units of Glucose) is both have glucose units.
• This hydrolysis of lactose occurs in small intestine by lactase, a brush border enzyme present in epithelial cells in the small intestine.
• Probiotics replace/enrich the microbiota of intestine hence lactose hydrolysis occur in intestine for lactose intolerant individuals who have consumed probiotic bacterial microflora