Theoretically nothing is happend
Lactose is a disaccharide composed of glucose and galactose, therefore it would react with Benedict's reagent to produce a positive result. Benedict's reagent is used to test for reducing sugars, and since lactose contains a free anomeric carbon that can reduce copper ions present in the reagent, it would give a color change from blue to brick-red precipitate upon heating if lactose is present.
The negative control in the lactose experiment would be a sample that does not contain lactose or the enzyme needed to break down lactose. This control is used to show what would happen if no lactose were present for the enzyme to act on.
No, iodine would not be effective for testing the presence of lactose. Iodine is typically used to detect the presence of starch, not lactose. To test for lactose, you would typically use reagents like Benedict's solution or glucose test strips.
342 grams of Lactose in 1 litre water or 34.2 grams in 100 mls.
the presence of lactose
When lactose is replaced with another type of sugar like glucose in the MacConkey Agar, it is usually to identify bacteria mutations. The method to detect the fermentation in a replacement sugar solution is the same as lactose fermented solution.
Glucose is important for lactose synthesis because it provides the substrate for the enzyme lactose synthase to combine with galactose to form lactose. Without glucose, there would not be enough substrate available for lactose synthesis to occur efficiently. Additionally, glucose can stimulate the production of lactose synthase enzyme, further promoting lactose synthesis in mammary glands.
They basically ask questions that are geared toward figuring out the personality of the employee. They will give the employee hypothetical scenarios and ask how they would react.
Citrobacter diversus is capable of fermenting lactose, therefore it would test positive for lactose fermentation in biochemical tests. This bacterium produces acid and gas during lactose fermentation, which can be detected using appropriate methods such as the MacConkey agar test.
I would use soy milk and whatever flavor of soy or lactose free ice cream. If the lactose is the reason, breyers makes a really good lactose free vanilla.
To stop them being constipated.
Sucrose. Sucrose is a disaccharide therefore does not have free electrons in the sugar to react with the Benedict reagent. Glucose has free electrons therefore shows positive with the Benedict reagent.