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Explain the role of ADH in regulating the water potential of the blood.

Firstly, a description of water potential would be a good place to start. An example definition of this could be: the pressure created by water molecules. The greater the number of water molecules present, t...
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Answered by Ruby H. • Biology tutor
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What is photosynthesis and where does in occur?

"Photo" means light and "synthesis" means to make something. Photosynthesis is the production of oxygen and glucose from sunlight, carbon dioxide and water in green plants. The glucose cr...
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Answered by Bella B. • Biology tutor
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Explain the process of muscle contraction

Nerve impulses travel along the muscle fibre membrane ( sarcolemma ). The impulse is carried down into the fibre through T-tubules . Impulses are spread along the sarcoplasmic reticulum membrane causing calc...
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Answered by Akash K. • Biology tutor
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What is the difference between mitosis and meiosis?

Mitosis and meiosis are both types of cell division.Cells that divide by mitosis produce 2 identical daughter cells - these cells have the same number of chromosomes. These cells are important for growth and...
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Answered by Abbey B. • Biology tutor
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How are signals transmitted across a neuromuscular junction?

Calcium ions enter the presynaptic terminal via voltage gated calcium channels, once the presynaptic terminal is depolarised by an action potential.Calcium ions stimulate vesicles to fuse with the presynapti...
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Answered by Ishan J. • Biology tutor
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