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Why are the lungs adapted for the rapid absorption of oxygen into the blood?

Oxygen is absorped into the blood by the process of diffusion. A large surface area, short diffusion pathway (the distance the oxygen has to travel through) and large concentration gradient increases the rat...
CP
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What is the meaning of having a 3 by 3 matrix with determinent 0. Both geometrically and algebriaclly.

The matrix is singular. No inverse matrix. Geometrically: No unique point of intersection of planes, Either no common point, a line of intersection or the three planes coincide. Alegebriacally: No unique sol...
RM
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How do you express partial fractions of a proper fraction that has a denominator of (x-2)(x+1)^2

A/(x-2) + B/(x+1) + C/(x+1)^2
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Answered by Rana M. • Maths tutor
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The drug Atropine blocks the action of of acetylcholine on structures innervated by post-ganglionic cholinergic neurones.

State precisely which part of the nervous system will be affected by atropine and suggest why atropine might be used during anesthesia. Answer: It acts on the parasympathetic branch of the autonomic nervous ...
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Answered by Rana M. • Biology tutor
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How would an act utilitarian make a moral decision?

According to the theory of act utilitarianism, a person's actions are only moral if they achieve the best possible results in that specific situation. A simple example is copying from a classmate during scho...
LL
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