why is it necessary?

Question

in many animals, glucose rather then starch is transported by the blood through the body to all the cells. starches in many foods digested to yield glucose. why is the disgestion of starch to glucose necessary?

Answer 1

Starch is made of many units of glucose and it's too big to get through the cell's plasma membrane easily. So, it's in the digestive tract and getting it to the blood requires it to go throught a membrane. Breaking off the glucose units enables them to be shipped out into the blood. Starch could go through the blood but it can't be taken up. Starch is made by plants; animal equivalent is glycogen. It's treated the same way, glucoses are broken off and shipped the other way through the cell membrane and out into the blood..

Answer 2

There is a very complicated and simple answers to this question. I assume you don't know anything about the ATPase machine so I'll give you the simple answer- Glucose is then furtherly broken down and used to create ATP and starch has to be broken down into glucose before the cell can utilize the energy from starch.

Answer 3

Starch is a many unit polymer. The very reason for attachment of acetyl co A enzymes to cut the polymers down for easy, cyclic handling.

Answer 4

We cant digest starch. In plants it is stored as starch.

Answer 5

The glucose is the only soluble form which is acceptable by the blood, other wise it will go as undigested part.

Answer 6

because starch is a very complex polymer dat can't be absorb by blood and other parts of body in their usual form. it should be break first in their simpler form so that can be easily absorbed by blood.