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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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What is photosynthesis?

Photosynthesis is the process by which plants make glucose. Light energy is absorbed by chorophyll which is a green substance found in chloroplasts in some plant cells and algae. This light energy is used to...
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Answered by Olivia R. • Biology tutor
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Describe how deforestation is causing the change in the amounts of different gasses in the atmosphere

Deforestation is the process of removing trees, usually for fuels or for timber. The removal of trees means that there is less photosynthesis taking place. Photosynthesis is the process of removing carbon di...
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Answered by Katie J. • Biology tutor
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State what is meant by 'active transport' and explain how a plant root hair cell use this to facilitate nutrient uptake from the soil.

(I have underlined any keywords in this response) Break this question down into 2 halves to make it easier to answer: "What is meant by 'active transport' " : Active transport is the movement of mo...
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Answered by Cemal M. • Biology tutor
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