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A covalent bond in an intramolecular bond which occurs when a pair of electrons is shared between two elements, usually two non-metals. The electrons shared are in the outer shell of the atom of each elem...

Chlorophyll is vital for photosynthesis, which is how the plant makes glucose for energy. If there is less photosynthesis, there will be less glucose made and so less energy released for growth. Glucose i...

The Biuret test is a test for protein, which detects for the presence of protein bonds. In the test, Biuret reagent (sodium hydroxide, hydrated copper (II) suphate and sodium tartrate) is added to the liq...

A personal statement needs to be unique and memorable but also show your passion for the subject. For medicine, you need to show you're a caring person and give specific examples of this, which is why wor...

The gradient or the slope of a curve is defined as the change in the y direction over the change in the x direction (dy/dx). In order to calculate a formula for the gradient of a curve we must differentia...