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Antibodies and antigens are made out of proteins. Proteins have a specific primary structure. The primary structure is the sequence of the amino acids that make up the protein. This sequence is specific t...

There are four bases- ATGC adenine, thymine guanine and cytosine.

Each base is attached to a deoxyribose sugar and a phosphate sugar. This makes up a nucleotide. Three nucleotides are called a codo...

Moles equation is moles= mass/RFM Avogadro's constant is 6.x 10²³. 

1 mole means 6x 10²³ atoms/molecules. 

e.g. 2 mole of Cu weighs 128g. What is the weight of 1 Cu ato...

If m=a^x n=a^y and a² =(m^y n^x)^z Show xyz=1.        

    The above question is an indices question from an AS textbook. This is questi...

The pluperfect tense helps to add extra information to an account from the past. It refers to events that took place before the events of the story in the past. For example, I went to the concert b...