0
What would happen to the lac operon if a bacterium were growing in the presence of both glucose and lactose?
Wiki User
∙ 12y ago
The regulatory portion of the operon is the only portion that would be transcribed.
Wiki User
∙ 12y ago
Add your answer:
Earn +20 pts
Who can metabolize lactose?
types of bacterium.
What Disaccharide is produced by combining glucose and galactose?
Lactose
Which enzyme converts lactose to glucose and lactose?
Lactase is the enzyme that breaks down lactose.
What two molecules are used to make glucose?
Sucrose and Lactose. Sucrose is made from glucose and fructose, and Lactose is made from glucose and galactose. Hope this helps! (:
How are sucrose lactose and maltose the same?
sucrose is the standard sweetness, a table sugar, glucose + fructose. lactose is the least sweet of all sugars, galactose + glucose. lastly, maltose is the sugar found in beers, glucose + glucose.
The lac operon enables a bacterium to build the proteins needed for lactose metabolism only when what is presented?
Only when lactose is present; if glucose is present the cell will metabolize glucose over lactose due to glucose being easier for the cell to metabolize.
What reaction would saccharolytic bacterium give in a TSI tube?
The saccharolytic bacterium in a TSI tube would liberate sulfates inside the tube turning it yellow. The TSI tube is triple sugar iron agar, which tells us if the bacterium can live in glucose, sucrose or lactose.
Who can metabolize lactose?
types of bacterium.
Genes that are turned on or off by the presence of lactose?
lacZ codes for the enzyme beta-galactosidase, which splits lactose into glucose plus galactose. lacY codes for a "permease" protein that allows lactose to enter the cell, and lacA codes for an enzyme that acetylates lactose.
Does coke have lactose in it?
Cola is lactose free it has no lactose it has glucose in it !
Why does lactose-free milk turn up as positive on a glucose strip?
lactose and glucose are not the same! milk contains sugar, and sugar (starch-->glucose) is glucose, so if the milk is lactose free, it still contains glucose and proteins...
Which enzyme catabolyzes lactose sugar into monosacharides?
lactase breaks down lactose into glucose and glucose monomers.
How is glucose an important factor in lactose synthesis?
Lactose is a disaccharide, made up of a bonded glucose and galactose.
What are the products of hydrolysis of maltose?
When a molecule of lactose is hydrolyzed the monomers that had linked together to form lactose will be pulled away from each other through the addition of lactose. Lactose is made from GLUCOSE AND GALACTOSE, henceforth these two monomers will emerge through the hydrolysis of lactose. Hope this helps...
What Disaccharide is produced by combining glucose and galactose?
Lactose
Which enzyme converts lactose to glucose and lactose?
Lactase is the enzyme that breaks down lactose.
What two molecules are used to make glucose?
Sucrose and Lactose. Sucrose is made from glucose and fructose, and Lactose is made from glucose and galactose. Hope this helps! (:
