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Biology
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Explain how plants meet the challenges of growing in hot, dry climates

In hot and dry climates plants will have an increased rate of transpiration, the release of water through the stomata of plant cells. In dry conditions there is a lack of water and as such, plants need to...

Answered by Jess H. Biology tutor
6186 Views

A myelinated axon conducts impulses faster than a non-myelinated axon. Explain this difference:

A myelinated neurone is insulated by a layer of Schwann cells that make up the myelin sheath. This aids in the faster conduction of an action potential down the neuronal axon. Depolarisation of the axon c...

Answered by Hanna P. Biology tutor
15074 Views

How does the body respond to raise its core body temprature?

shivering - muscles contract rapidly, causes more respiration which releases energy blood vessels near skin constrict - blood flow to skin decreases, less energy lost to surroundings

Answered by Cara S. Biology tutor
1827 Views

I have trouble remembering which muscle contracts and which muscle relaxes during the Iris reflex; could you explain it to me?

The first thing to remember is that muscles always act in pairs; so when one contracts, the other relaxes. Think of the muscles in your arm; when you bend your arm towards you, the bicep contracts so beco...

Answered by Sumayya K. Biology tutor
19050 Views

Describe how the guard cells surrounding the leaf pores are adapted to their role

unevenly thickened cell wall able to change shape / bendtransport proteins / ion pumps, in plasma membrane(presence of) chloroplasts (to provide, ATP / energy)

Answered by Faiza R. Biology tutor
4104 Views

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