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Helicase (an enzyme) breaks the hydrogen bonds between the DNA resulting in two strands. Only one strand acts as a template. RNA nucleotides attracted to exposed bases according to base pairing rules (A-U...

DNA replication takes place by semi-conservative replication (i.e. only half of the strand in each DNA molecule are from the original DNA molecule). First, the enzyme DNA helices is required to break the ...

This process is called eutrophication. Fertiliser is applied to plants because it contains a lot of ammonia and nitrates, which are needed to help a plant grow. However, if too much is applied, especially...

The arterial end contains a higher concentration of oxygen than the venous end.The arterial end contains a higher concentration of glucose/amino acids.The arterial end contains a lower concentration...

Both osmosis and diffusion are processes that involve the movement of molecules from an area of high concentration to an area of low concentration. Neither process requires energy.
Osmosis and diffus...