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What is necessary for photosynthesis to occur?

Essentially, photosynthesis is the process by which plants convert light energy to produce sugar. It needs water, light and carbon dioxide to occur and produces oxygen and sugar/carbohydrates. Photosynthesis...
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Answered by Claudia C. • Biology tutor
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Give an account of RNA and its role in protein sythesis.

RNA is a single stranded molecule, composed of a ribose sugar phosphate backbone (as opposed to the deoxyribose sugar phosphate double-stranded DNA) and the bases, adenine, guanine, cytosine and uracil (inst...
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Answered by Anna F. • Biology tutor
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In what ways can a point mutation affect the protein encoded for by a gene?

Point mutations can affect a protein in various ways, depending on the type of point mutation that has occurred. Substitution mutations can be silent , causing no change in the end protein; they can cause mi...
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Answered by Ryan M. • Biology tutor
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Describe the conducting system of the heart.

The pacemaker cells of the sino-atrial node in the right atrium generate an impulse.This impulse travels through the atria, causing depolarisation of cardiac muscle cells and atrial contraction.The impulse w...
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Answered by Calum P. • Biology tutor
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Horizontal gene transfer is a mechanism that allows bacteria to genetic information between cells. Describe this process.

Bacteria have a singular, large, circular chromosome and can have many smaller circular DNA-containing structures called plasmids. Bacterial cells that are in close proximity can form a connective bridge, ca...
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Answered by Benjamin M. • Biology tutor
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