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What is chromatin?

The length of a strand of human DNA is much longer than you’d think! In fact if it was laid out in a straight line it would be several metres in length. The size of a nucleus is approximately 6 micrometers i...
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Answered by Jake H. • Biology tutor
15112 Views

How do I conjugate present tense verbs in Arabic?

Arabic verbs change according to pronouns a lot more than English verbs, but luckily they tend to follow regular patterns, so they are not too hard to learn. Here is a simple model to follow using the presen...
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Answered by Abigail D. • Arabic tutor
6916 Views

How do I use the subjunctive in Spanish?

The subjunctive is hard even for native speakers, so don't worry! There are a few handy rules to remember. Use the subjunctive in Spanish: 1. If the action you are describing did not actually happen: "S...
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Answered by Abigail D. • Spanish tutor
3919 Views

What is the form of a poem?

In poetry, form is the physical structure of the poem. When a poet makes a decision about form, he is prescribing himself to carry both an internal and external baggage. Internal baggage comes in the form of...
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Answered by Sarah H. • English tutor
13156 Views

What are economies of scale and scope?

Economies of scale and scope The concept of economies of scale were introduced by Adam Smith as a part of his famous works on division of labour. The main idea behind it is that efficiency of production chan...
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Answered by Jakub C. • Economics tutor
7594 Views