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How is insulin released in response to raised plasma glucose?

Raised plasma glucose concentration means greater entrance of glucose into beta cells in the Islet of Langerhans in the pancreas. This increased concentration glucose means greater metabolism of glucose, pro...
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Answered by Madeleine O. • Biology tutor
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What is the subjunctive?

The subjunctive is a tense that exists in Spanish but not in English. The two most commonly used forms are the past imperfect and present. It is used with certain triggers (phrases and moods) that can be lea...
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Answered by Lizzi G. • Spanish tutor
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What is a stereoisomer?

Stereoisomers are molecules with the same structural formula (same number of each type of atom bonded together in the same order e.g. carbon bonded to carbon bonded to oxygen) but with the atoms arranged dif...
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Answered by Lizzi G. • Chemistry tutor
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There are two lines in the x-y plane. The points A(-2,5) and B(3,2) lie on line one (L1), C(-1,-2) and D(4,1) lie on line two (L2). Find whether the two lines intersect and the coordinates of the intersection if they do.

We first want to find the equations of the lines. The general equation of a line is: (y-y 1 )=m(x-x 1 ) where (x 1 ,y 1 ) are the coordinates of a point on the line and m is the gradient of the line. In case...
ZS
Answered by Zsofia S. • Maths tutor
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Why is an object that moves in a circular path accelerating when it has constant speed?

Think about the definition of acceleration - it is the rate of change of velocity . Your statement that the object's speed is constant is correct, can you think about why the object's velocity isn't constant...
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Answered by Inigo S. • Physics tutor
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