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Explain why a plant tip will bend towards a light source (2)

When a light source is shone at a plant, a hormone known as auxin travels to its shady side, which enables this side of the plant to elongate its cells and stretch. This results in the tip of the plant bendi...
LD
Answered by Leo D. • Biology tutor
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Describe and explain how the secretion of ADH affects urine produced by the kidneys.

ADH diffuses into the bloodstream and acts in the kidney to regulate the volume and concentration of the urine . The ADH binds onto the receptors on the collecting duct controlling the permeability of the co...
AM
Answered by Adithi M. • Biology tutor
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What are the 4 main areas of the brain and what functions do they each do?

Cerebrum (also called the cerebral cortex) gives us our personality and intelligence CereBELLum keeps us balanced and controls coordination (the way I remember this is that BELLe from beauty and the beast is...
CF
Answered by Chloe F. • Biology tutor
3019 Views

What is meant by the term enzyme specificity?

Every enzyme has a unique shape. They have a region called the 'active site' where a substrate can bind. This site of the enzyme is a particular shape and only substrates that fit this site exactly can bind....
ER
Answered by Emma R. • Biology tutor
5614 Views

How does antibiotic resistance occur?

Bacteria can mutate and this mutation can make them resistant to an antibiotic. Treating this infection then means that only the non-resistant strains of bacteria will be killed. The resistant bacteria will ...
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Answered by Emma R. • Biology tutor
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