Describe the process of insulin secretion. (7 marks)

Beta cells have vesicles containing insulin inside them (1). (2) High glucose levels cause glucose uptake via glucose channels into the beta cell and glucose is metabolised into ATP (3) inside the cell, which causes K+ channels to be blocked. This causes cell membrane depolarisation (4) which leads to calcium channels opening (5). Ca2+ enters into the cell via diffusion (6) which results in ex0cytosis of vesicles containing insulin (7) from the beta cell.

Answered by Gabriella G. Biology tutor

1858 Views

See similar Biology A Level tutors

Related Biology A Level answers

All answers ▸

How is the tertiary structure of an enzyme important to its function?


How can natural selection create two different species from one species?


Explain the processes that lead to the contraction of a single muscle


What's the difference between genotype and phenotype?


We're here to help

contact us iconContact usWhatsapp logoMessage us on Whatsapptelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo
Cookie Preferences