complete the following paragraph relating to the enzyme,b -galactosidase .this enzyme hydrolyses the disaccharide lactose to constituent monosaccharides ,galactose and glucose ,drag and drop the approprite words into the correct space.
the enzyme ,B-galactosidase is added to a solution of lactose :over time, the number of water molecules presents in the sloution ................At the same time the number of molecules of lactose in the solution...............and the number of molecules of galactose and glucose in the solution ............The number of molecules of B-galactosidase in the solution..............
1)increases
2)decreases
3)stay the same
4)increases
5)decreases
6)stay the same
See previous post.
The correct completion of the paragraph is as follows:
The enzyme, B-galactosidase is added to a solution of lactose: over time, the number of water molecules present in the solution (1) stays the same. At the same time, the number of molecules of lactose in the solution (2) decreases, and the number of molecules of galactose and glucose in the solution (3) increases. The number of molecules of B-galactosidase in the solution (4) stays the same.
Explanation:
1) The number of water molecules stays the same because the enzyme hydrolyzes the lactose by breaking the glycosidic bond between the monosaccharides while consuming a water molecule in the process. Therefore, the water molecules are not being consumed or produced, and their quantity remains unchanged.
2) The number of molecules of lactose decreases because the B-galactosidase enzyme hydrolyzes lactose into its constituent monosaccharides, galactose, and glucose. This means that the lactose molecules are being broken down, resulting in a decrease in their quantity.
3) The number of molecules of galactose and glucose increases because these are the monosaccharides formed by the hydrolysis of lactose. As the lactose molecules are broken down by B-galactosidase, the quantity of galactose and glucose molecules formed increases.
4) The number of molecules of B-galactosidase in the solution stays the same because the enzyme itself is not being consumed or produced during the hydrolysis reaction. It acts as a catalyst, facilitating the breakdown of lactose but remaining unchanged in terms of its quantity.