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How do you know if a molecule has ionic or covalent bonding?

Covalent bonding is between non-metal atoms and involved the sharing of electron pairs, whereas ionic bonding is between a metal and a non-metal and involves the transfer of an electron from the metal to the...
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Answered by Jemima B. • Chemistry tutor
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Explain the role of enzymes in digestion? (4 marks)

Enzymes are biological catalysts that hydrolyse chemical bonds in biological molecules, such as lipids. Enzymes are important in digestion, as they aid the absorption of molecules across the lumen of the sma...
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Answered by Intisar A. • Biology tutor
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How does the presentation of a virus antigen by a macrophage lead to antibody production against the antigen?

T helper cells recognise and bind to the antigen and become activated. The activated T helper cell stimulate B cells to form plasma cells that produce and release antibodies that are specific to the viral an...
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Answered by Prakruthi P. • Biology tutor
3661 Views

How do I write a good Psychology essay?

It goes without saying that a thorough knowledge of the subject is important. In order to be able to score all the points for the outline portion of the essay you must be able to describe and explain theorie...
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Answered by Daniel G. • Psychology tutor
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'Ethical statements are simply expressions of emotion' Discuss

Introduction- Ethical statements are not simply expressions of emotion. Although the non-cognitive branch of meta-ethics emotivism claims ethical statements are only expressions of emotion due to no evidence...
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