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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 lun...

The active site of the enzyme has a specific tertiary structure . The active site is complementary to the substrate maltose. Therefore only maltose may bind to the enzyme to form an enzyme-substrate complex.

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 – endother...

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 bo...

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 and...