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Describe and explain the adaptions of the human alveoli in making gas exchange efficient

Gas exchange can be made efficient in three main ways: shortening the diffusion distance, increasing the diffusion speed and increasing the surface area of the diffusion surface. The alveoli in the human ...

Answered by Eloise G. • Biology tutor

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Why does the enzyme Maltase catalyse only the hydrolysis of maltose.

The active site of the enzyme has a specific tertiary structure. The active site is complementary to the substrate maltose. Therefore

Answered by Keegan S. • Biology tutor

5497 Views

Express 8/((root3) -1)) in the form a(root3) +b, where a and b are integers.

You would multiply both numerator and denominator by the expression (root3 +1)/(root3 +1). This expression is equal to 1 hence the original expression remains unchanged. The new expression is now (8(root...

Answered by Shubham K. • Maths tutor

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How do I expand (x-2)(3x+3) into a quadratic?

The expansion of two brackets containing two terms each is a little more complicated than expanding say, x(3x+3). There is a process to follow for these questions. First, just look at the x term in the fi...

Answered by William P. • Maths tutor

4288 Views

What is the chain rule?

The chain rule is a type of differentiation used when you are differentiating a function of a function e.g. (2x+5)^3, or e.g.2. (x^2 + 5)^0.5.
Firstly you replace one function with u. You then diffe...

Answered by Alice S. • Maths tutor

3563 Views