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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

3478 Views

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

4674 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

6727 Views

How are nerve impulses transmitted across a synapse?

Nerve impulses travel in one direction from the pre-synaptic to the post-synaptic neuron across a gap called a synapse. This is done to continue a nerve impulse so that it can reach its destination in the...

Answered by Elizabeth H. • Biology tutor

7273 Views

Describe and explain the process of glycolysis

There are 4 main stages in the process of respiration: glycolysis, link reaction, Krebs cycle and oxidative phosphorylation. In glycolysis one glucose molecule is broken down into 2 molecules of pyruvate ...

Answered by Shivani K. • Biology tutor

11130 Views