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How do we control our heart beat

To begin with, we should first look at how the heart beats. Beating of the heart is due to myogenic muscle contraction, This means the myocyte (muscle cell) itself is the origin of the contraction and is not...
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Answered by Jess D. • Biology tutor
3357 Views

How does the xylem structure of the plant help transpiration?

Firstly I would discuss with the student what transpiration is and what xylem vessels are. Transpiration is the inevitable consequence of gas exchange in the leaf causing water to be transported through the ...
RV
Answered by Robine V. • Biology tutor
4780 Views

List the differences between and eukaryotic and prokaryotic cell

Eukaryotic cell: Linear chromosomes, DNA bound to proteins (histones), DNA found within a nucleus (nucleus present), membrane bound organelles, cell wall not present in animal cells but present in plant and ...
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Answered by Niamh D. • Biology tutor
2554 Views

What type of cells do multipotent stem cells go on to form?

Multipotent stem cells --> haematopoeitic adult stem cells
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Answered by Skye F. • Biology tutor
2270 Views

What is the difference between second messengers and gene regulatory proteins?

Second messengers are used in the downstream signalling cascade of protein hormones. As these hormones are hydrophilic, they can't cross the phospholipid bilayer. Therefore, when binding to a specific recept...
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Answered by Hanna H. • Biology tutor
2412 Views