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Biology
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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

Answered by Daria D. • Biology tutor
2094 Views

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

Answered by Daniel S. • Biology tutor
10419 Views

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 hydr...

Answered by • Biology tutor
2218 Views

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 p...

Answered by • Biology tutor
1686 Views

How do signals cross a synapse

  1. 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...
Answered by Sian R. • Biology tutor
1856 Views

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