Search over 10,000 free study notes

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 an...

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 t...

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 a...

Multipotent stem cells --> haematopoeitic adult stem cells

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 rec...