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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

5515 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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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

3577 Views

How does an endotherm respond to a decrease in external temperature?

What's an endotherm? An animal that can increase its body temperature by metabolically produced heat.
Why does a decrease in temperature matter? 37ºC is the optimal temperature for enzyme function – ...

Answered by Felix B. • Biology tutor

7954 Views