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Firstly, the enzyme DNA helicase separates the two strands in DNA by breaking the hydrogen bonds between them. Both of the two strands then act as templates to which free nucleotides attach to. This attachme...

Cohesion is the attraction of molecules of the same type.Water is cohesive because it is dipolar therefore the positive electrons from the 2 hydrogens are pulled towards the oxygen end making the oxygen end ...

Solvents are substances that can dissolve other substances.Water can act as a solvent for ions (charged particles/molecules) because it is dipolar (the positive electrons from the 2x hydrogen are pulled towa...

Fish gills are made up of thin plates called gill filaments , which are covered in structures called lamallae . Both the gill filaments and lamellae provide a large surface area for gaseous exchange, increas...

Water has many properties that make it an essential molecule within living things. One main property that water molecules have are hydrogen bonds. These are intermolecular forces that essentially allow water...