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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 th...

BF
Answered by Bethany F. Biology tutor
9070 Views

What is an enzyme?

Enzymes are proteins that catalyse the conversion of substrates into products. Similar to other catalysts, enzymes are chemically unchanged during the reaction and they do not change the position of an...

BF
Answered by Bethany F. Biology tutor
3425 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
19808 Views

Find f'(x) and f''(x) when f(x) = 3x^2 +7x - 3

We know that when f(x) = x^n, f'(x) = nx^n-1       (1)

So we apply this to all components of f(x), giving 

f'(x) = 2(3x) + 7 = 6x +...

GP
Answered by Georgiana P. Maths tutor
5808 Views

how do you form and use the near future tense?

Use the present tense form of aller in front of the infinitive of a verb to form the near future tense. EG:

I am going to have a shower = Je vais prendre une douche.

This ca...

TH
Answered by Thea H. French tutor
3403 Views

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