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Fractional distillation is used to separate crude oil into its constituent fractions (e.g. petrol, naphtha etc. - names not required)Crude oil is heated to a high temperature and most is ...
Answer:A dead or inactive or weak form of pathogen is introduced. (Don't say Germ)This stimulates white cells / lymphocytes / leucocytes - B and T cells (not phagocytes)to produce antibodies. Antib...
Firstly, decide whether the pronouns in the text are inclusive or exclusive. Pronouns such as ‘you’ and ‘we’ can be used inclusively to involve the reader in the text. For example, imagine a poster with t...
Hitler’s rise to power at the beginning of the 1930’s can be attributed to the Nazi party’s ability to manipulate the German social, economic and political conditions of the previous decade. The Nazis wer...
Glycoproteins can be antigens, enabling cell recognition of self and non-self cells. They also act as receptors for molecules such as hormones and drugs ...
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