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True [87]
3 years ago
10

What is the sa node of the heart

Biology
1 answer:
olasank [31]3 years ago
5 0

Its a cluster of cells that are situated in the upper part of the wall of the right atrium.

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Phospholipids on the other hand has its molecules divided into two distinct regions, the head and the tail region. The head region is hydrophillic and it is polar in nature, that is, it mixes well with water. The tail region is made up of the fatty components  and it is hydrophobic.
Because of this difference in structure, phospholipid will dissolve better in water.
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