Top answers

what are enzymes?

Enzymes are biological catalysts . They speed up chemical reactions in all living things, and allow them to occur more easily. They occur in plant cells and animal cells. Enzymes are chemical molecules, made...
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Answered by Alex B. • Biology tutor
4472 Views

Why does eating sweet foods help to improve a persons mood?

Eating sweet food improves mood because it can alleviate a dysphoric mood as it provides more energy and can lead to an increase in the levels of serotonin in the brain, which can therefore reduce depression...
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Answered by Alex B. • Psychology tutor
9943 Views

What's the difference between cell division and cell differentiation?

Cell differentiation allows a cell to specialize to achieve a specific function Multicellular organisms (eg: humans) have different types of cells which have different functions. For example: a muscle cell n...
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Answered by Svet L. • Biology tutor
48652 Views

How can I memorise my presentation for the oral exam?

There are many different techniques so you have to find what works for you. The most important things are time and patience. One technique which I would really recommend is recording yourself reading out the...
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Answered by Laura S. • Spanish tutor
7828 Views

Comment les progrès technologiques peuvent-ils libérer ou enchaîner l'être humain?

Introduction: Mise en place du sujet --> évolution technologique dans le monde, tracer l'évolution, donner quelque chiffres de l'utilisation de la technologie, comment la technologie prend place dans notr...
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Answered by Abla Z. • French tutor
2069 Views