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

Resting membrane potential of a neuron is maintained by active transport of sodium (Na+) out of the cell and potassium (K+) into the cell through the Na+/K+ pump. Due to the negative charge of Cl- and som...

The rate of photosynthesis is affected by:

1. Light intensity - without enough light, cells cannot photosynthesize even if there is an excess of carbon dioxide and water

2. Ca...

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...