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Outline the process of DNA replication.

For organisms to grow and repair cells are constantly replicating, and therefore the DNA within cells is also constantly replicating. The process begins with the enzyme DNA helicase breaking the hydrogen bon...
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Answered by Leo H. • Biology tutor
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Why can enzymes only catalyse one specific reaction?

Because enzymes have a specific tertiary structure which defines the 3D shape of the active site. This means that only a substrate with a complimentary shape to the active site can bind to it and form an enz...
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Answered by Jasmine M. • Biology tutor
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Explain the difference in the rates of reaction at 60 °C and 37 °C between 20 and 40 minutes.

"A technician investigated the effect of temperature on the rate of an enzyme-controlled reaction. At each temperature, he started the reaction using the same concentration of substrate. Explain the dif...
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Answered by Ellie C. • Biology tutor
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Describe what can be used to determine the time of death of a corpse

there are five different distinct methods whihc can be used to determine time of death: Body tempreture: The body cools after death as there are no heat producing metabolic reactions. The drop in tempreture ...
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Answered by Daniella P. • Biology tutor
7662 Views

Explain the functional differences between a t-RNA and an m-RNA molecule

A tRNA molecule is one which carries an amino-acid and takes it to ribosomes to be inserted into an amino-acid sequence making a protein during the translation step of protein synthesis. An mRNA molecule is ...
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Answered by Chintan P. • Biology tutor
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