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what is water potential?

Water potential is a measure of the tendency of water to move from one place or compartment to another. Water moves based on the water potential, from a region of higher water potential to a region of lower ...
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Answered by Verity G. • Biology tutor
4480 Views

Explain the differences between the lock-and-key mechanism of enzyme action and the induced fit model

The lock-and-key mechanism of enzyme activation involves the active site of the enzyme fitting perfectly with the substrate molecule and the subsequent reaction being catalysed biologically. However, the ind...
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Answered by Caitlin O. • Biology tutor
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How can a mutation in a sequence of DNA affect the function of a protein?

Firstly, it is important to recap how DNA codes for synthesis of proteins. mRNA is formed from complementary base pairing to the template strand of DNA in a process called transcription. Every 3 bases within...
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Answered by Ben L. • Biology tutor
32604 Views

Describe how the resting potential is maintained in a neurone, and what this resting potential value is.

The resting potential of a neurone is -70 mV, which means that it's more negative in the cytoplasm than in the tissue fluid. In the membrane there are sodium-potassium pumps which work using active transport...
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In regards to kidney function, describe the processes involved in an individual who is well hydrated.

The water potential of blood rises. This is detected by osmoreceptors in the hypothalamus in the brain. This detection stimulates less ADH to be released. ADH is Antidiuretic Hormone. It’s role is to alter m...
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Answered by Grace T. • Biology tutor
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