Please give me the answer to the A-level Biology Question How is the concentration of sodium altered in a cell in the intestines and why is glucose absorption affected?

Please give me the answer to the A-level Biology Question How is the concentration of sodium altered in a cell in the intestines and why is glucose absorption affected?

A-level Biology Help >>>>> What causes sodium levels affected in cells in the intestines? Why is it that glucose absorption is affected? Imagine a cell that is one of a rectangle. Of the one side, there are the shape of a finger (this side is facing the lumen of the intestinal) known as the villi while the other is flat. It is the bottom membrane of the cell, which is. On the flat surface, blood is continuously flowing by and carrying with it a variety of substances which exit to the flat sides of the cell. On the membrane of the finger there are proteins that pump at the same time Na the ions and Glucose through the intestinal lumen to the cell. They are known as the symport protein. In Greek, Sym.=with/together and in latin port is door. So two things, sodium and glucose are brought TOGETHER in the cell. In the cells with a flat bottom,, we also have potassium and sodium pumps. This is an enzyme that removes 3 sodium molecules from the cell and it pumps 2 potassium molecules into the cell. In order to accomplish that , it makes use of ATP. The pump breaks the ATP down into ATP in addition to Pi and then uses the energy it releases to perform the pumping.
So, the pump, which is that is on the flat side takes sodium out of the intestinal cells and decreases the amount of sodium present inside the cell. In the end in comparing what's inside the cell to the intestinal lumen , we find that inside the intestine, there is more sodium. We've got what's known as an sodium concentration gradient. Therefore, sodium would like to go where there's less sodium down its concentration gradient and this is what happens internal linings of intestinal cells. This allows the proteins that are located on the finger-like surface of the cell to accomplish the task we mentioned in the previous paragraph.
>>>>> Answered by a professional private A-level Biology Tutor >>>>> Do you need help to learn, study or revise? Check out our award-winning A-level Biology Tutors

Answered by a professional private A-level Biology Tutor

Do you need help to learn, study or revise? Check out our award-winning A-level Biology Tutors

Check out more A-level Biology questions and answers to help you study-

Describe the basic structure of a cell membrane?
What is the difference between the genotype and the phenotype?
How can additional molecules or ions increase the activity of an enzyme?
Describe and explain the main function of the proximal convoluted tubule in filtration/absorption
What are two protein filaments that interact in the sarcomere to cause muscular contraction?
Describe the similarities between photosynthesis and respiration
How is the process by which plants turn towards a light source called and what is the role of auxin (IAA) in it?
How do I explain the process of Natural Selection?
How do the components of a plasma membrane affect the movement of substances into and out of a cell, and why is this regulation important?

Michael Richardson
Michael Richardson

A-level teacher and online tutor. Former university professor and hobby blogger

Leave Message

Your email address will not be published. Required fields are marked *