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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 the gluc...
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Answered by Bethany F. • Biology tutor
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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 endoplasm...
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Answered by Bethany F. • Biology tutor
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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.Lig...
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Answered by Amy H. • Biology tutor
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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.
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Answered by Rishitha J. • Biology tutor
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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.
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Answered by Rishitha J. • Biology tutor
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