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How does the kidney filter blood?

The kidney is able to filter blood as it is made up of about a million filtering units. These units are called nephrons which are assosiated with capillaries. The blood flows to the glomerulus, which is a...

Answered by Alyssa C. Biology tutor
3388 Views

Explain the lock and key hypothesis of enzyme function

To start, it is important to have a clear understanding of what an enzyme is. An enzyme is a biological molecule which speeds up the rate of a reaction without being changed or used up in the process. Eac...

Answered by Emma P. Biology tutor
8576 Views

Q: Give examples of how the human body maintains homeostasis when we exercise.

A: When we exercise the tissues of our body have an increased requirement for oxygen. The body facilitates this by increasing the respiratory and heart rate, thereby increasing the rate of gas exchange in...

Answered by Amy M. Biology tutor
2404 Views

Pathogenesis: what is the process of pathogenesis and how do microorganisms cause disease?

Pathogenesis is defined as the manner of development of a disease and the biological mechanisms that leads to a diseased state. Pathogenesis can be caused by a variety of things however; microbial infecti...

Answered by Michaela G. Biology tutor
5732 Views

Explain the process of synaptic transmission (6 marks).

  • When the action potential reaches the pre-synaptic knob, voltage gated Ca2+ channels open which allows Ca2+ into the pre-synaptic knob - This causes vesicles which contain neur...
Answered by Dominic H. Biology tutor
9216 Views

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