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How does the oxygenated and deoxygenated blood travel throughout the heart?

Human circulation is a closed system that may be divided into systemic and pulmonary circulation. The first one is a loop from the heart to the body. The second one is a loop from the heart to the lungs. In ...
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Answered by Julia Ż. • Biology tutor
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Outline the effects of temperature, light intensity and carbon dioxide concentration on the rate of photosynthesis in plants.

Increases in temperature increase the rate of the photosynthesis reaction by providing energy, this is accurate up to a point where enzymes denature meaning they go through irreversible physical changes and ...
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Answered by Bilge D. • Biology tutor
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Describe the process of spermatogenesis leading to the production of four sperm cells in a human male.

the Process occurs in the seminiferous tubules and is supported by sertoli cells which provide the nutrients and energy for the division.Spermatogonia grow and enlarge until big enough to divide, once they a...
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Answered by Melanie B. • Biology tutor
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What is an action potential?

The action potential lies at the heart of how we think, move and sense, as it constitutes the language of the nervous system. The two main characters in the spectacle of the action potential are potassium io...
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Answered by Luke W. • Biology tutor
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How do skeletal muscles contract ?

A motor neuron stimulates the sarcoplasmic reticulum, causing it to release Calcium ions. The calcium ions binds to the toponin that is blocking the myosin binding site on the acting filament, the binding of...
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Answered by Akshita N. • Biology tutor
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