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Describe the differences in structure between an artery and a vein.

Blood is transported around the body by blood vessels. Arteries are responsible for carrying blood away from the heart, whilst veins are responsible for returning blood to the heart. Arteries and veins are b...
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Answered by Georgina W. • Biology tutor
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What are the differences between aerobic and anaerobic respiration in animals?

Aerobic - requires oxygen, releases carbon dioxide and water, produces much more energy for the same amount of glucose. Anaerobic - doesn't require oxygen, releases lactic acid, much less efficient at produc...
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Answered by Musa A. • Biology tutor
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How is DNA made into protein?

DNA is first transcribed into a messenger RNA molecule called mRNA, RNA is similar to DNA but contains Uracil instead of Thymine. RNA polymerase recruits nucleotides to build the mRNA molecule and binds them...
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Answered by Sophie M. • Biology tutor
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What is diffusion and how is it different from osmosis?

Diffusion can otherwise be known as the technical term for the movement of particles. It is the process where the particles in question moves from an area where it is high in concentration to an area where i...
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Answered by Alvina K. • Biology tutor
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How does the structure of a nucleotide contribute to the structure of DNA, and its function as a carrier of genetic information?

There are four DNA nucleotides: Adenine, Cytosine, Thymine and Guanine. They are each made up of a nitrogenous base, deoxyribose sugar, and a phosphate group, and the four nucleotides differ in the structure...
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Answered by Matthew A. • Biology tutor
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