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Formation of phosphodiester bond

(Answer supplemented with whiteboard annotations) As previously mentioned at GCSE, the sugarphosphate backbone is formed by a condensation reaction between the phosphate group of one DNA molecule and the deo...
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Answered by Mizanur R. • Biology tutor
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The components of DNA and how they interact to form a double helix structure

(Answer supplemented with whiteboard annotations) The structure of DNA consists of three pivotal structures. A deoxyribose pentose sugar made up of five carbons. An ionised phosphate group and a nitrogenous ...
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Answered by Mizanur R. • Biology tutor
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How do I construct the French conditional tense for regular verbs?

To make the conditional tense in French you need to take the infinitive form of the verb, the form found in the dictionary, and add an ending onto it. These endings are: Je (I) - ais Tu (You) - ais Il/Elle/O...
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Answered by Henry W. • French tutor
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On a packet of brown rice it says 'When 60g of rice is cooked, it will weigh 145g.' If Katy has 100g of brown rice, how much will it weigh when cooked?'

Find by what ratio the weigh of rice has increased. If the rice increases in weight from 60g to 145g, the factor by which it increases is: (145/60) = 2.4166... Multiply the amount of rice Katy has by this fa...
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Answered by Ben O. • Maths tutor
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What is the difference between classical and operant conditioning?

Classical conditioning is a reflex response which involves learning an association between a naturally relevant stimulus such as food (called the uncondtioned stimulus) and a stimulus which is not naturally ...
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Answered by Olivia R. • Psychology tutor
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