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Define osmosis

The (passive) movement of water from an area of high water potential to low water potential across a partially permeable membrane
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Answered by Daria D. • Biology tutor
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Can you explain the process of ultrafiltration and selective readsorption?

Ultrafiltration and selective reabsorption are processes which occurs in the kidney to filter the blood. In ultrafiltration, the blood is under a high pressure in the glomerulus which causes ions and small m...
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Answered by Daniel S. • Biology tutor
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Describe The Structures of different sugars, and why these different features are useful.

Amylose is a short coiled molecule. Which makes it compact, Good for storing lots of glucose in a small space.Amylopectin is a branched molecule with many end points for enzymes to access. So lots of hydroly...
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Explain the importance of mRNA in the process of protein synthesis and problems that can occur if there is a problem with the mRNA template?

mRNA serves as the template from which the tRNA will join to, during the process of translation, to form the polypeptide chain and eventually the protein. if the template is wrong or missing the desired prot...
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How do signals cross a synapse

action potential arrives at post synaptic terminal 2. voltage gated calcium channels open 3. calcium enters presynaptic neuron and move to neurotransmitter vesicles 4. vesicles move to membranes and dock 5. ...
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Answered by Sian R. • Biology tutor
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