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- 2 strands:  Intertwine to form a double-helix structure                                                    Phosphodiester bonds between between phosphate group and pentose sugar of nucl...

A blood clot or thrombus is formed pathologically in the blood stream when the clotting cascade is activated inappropriately. This commonly occurs over the rough vessel surface during atherosclerosis of a...

In the blood flowing through the kidneys, you find lots of different substances, like glucose and amino acids (which the body wants to keep and use) and urea (which the body wants to get rid of). The firs...

DNA is made up of 4 bases (Adenine, Thymine, Guanine, Cytosine)

Adenine, guanine = purine 'Pure AGony'

Thymine and cytosine  = pyramidines

Adenine pairs with thymine (2 Hydrogen bonds...

Simple diffusion, facilitated diffusion and active transport are three methods to transport various molecules across a membrane. Whilst similar in the overall effect, there are some major differences betw...