Top answers

Biology
A Level

How is insulin secretion controlled?

Beta cells in the pancreas contain potassium and calcium ion channels - potassium ion channels are normally open and calcium channels closed. When glucose concentrations outside of the cell are high th...

BF
Answered by Bethany F. Biology tutor
9511 Views

What is the difference between the rough endoplasmic reticulum and the smooth endoplasmic reticulum?

The rough endoplasmic reticulum (RER) has ribosomes bound to its surface, and it has a flattened-sac appearance. The RER is involved in packaging proteins to send to the Golgi apparatus. The smooth end...

BF
Answered by Bethany F. Biology tutor
22098 Views

How does photosynthesis happen?

The overall reaction in photosynthesis is 6CO2 +6H2O ------> C6H12O6 + 6CO2. The process can be broken down in to two main reactions.The Light Dependant reaction, which takes place in the Thylakoids.1....

AH
Answered by Amy H. Biology tutor
3863 Views

State the advantage for a plant of having many different accessory pigments in the photosystem:

This allows for the absorption of a range of different wavelengths of light.

RJ
Answered by Rishitha J. Biology tutor
13691 Views

Outline the role of the Golgi Apparatus:

The Golgi Apparatus modifies proteins by adding molecules onto them for example; glucose to make glycoproteins. These proteins are then re-packaged into Golgi vesicles for transport to other organelles...

RJ
Answered by Rishitha J. Biology tutor
10352 Views

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