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Explain, with the use of a punnet square, heterozygous inheritance.

First, let's make sure we're clear on what heterozygous inheritance means. Hetero means different like heterosexuals are attracted to a different gender than themselves, and zygous is relating to the word zy...
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Answered by Kristina M. • Biology tutor
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Nitric acid (HNO3) is a strong acid. Ethanoic acid (CH3COOH) is a weak acid. Write an equation to show how ethanoic acid behaves as a weak acid in its reaction with water.

CH3COOH + H2O ⇌ CH3COO– + H3O+
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Answered by Jigi M. • Chemistry tutor
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Why is this reaction an Endothermic reaction?

bond making is exothermic, bond breaking is endothermic. It takes more energy to break the bonds than the energy released in making new bonds
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Answered by Jigi M. • Chemistry tutor
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What are the functions of glycoproteins in the cell membrane? (6 marks)

Antigens - cell recognition/cell signalling - receptor or binding site for hormones - cell adhesion - attach to water molecules to stabilise the cell membrane - receptor/ binding site/ trigger
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Answered by Jigi M. • Biology tutor
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How does sweat cool the body down? (2 marks)

Water in the sweat evaporates due to the body temperature of the organism - This takes heat with it
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Answered by Jigi M. • Biology tutor
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