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Discuss the ethical issues of IVF in humans

There are several arguments for having in vitro fertilisation. Firstly, it allows people who couldn't otherwise have children to start a family. Also the embryos that are used for IVF, if there are signs tha...
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Answered by Elsa C. • Biology tutor
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Outline the four levels of protein structure.

Primary structure is the number as well as the sequence/order of amino acids in a polypeptideSecondary structures are regularly repeating structures which can either be beta-pleated sheets or alpha-helices h...
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Answered by Ethan P. • Biology tutor
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Explain the first stages of aerobic respiration that occur before the Krebs cycle.

Aerobic respiration is a controlled release of energy from organic compounds to produce ATP with the use of oxygen. It occurs in several stages: Glycolysis starts with phosphorylation (addition of phosphate ...
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Answered by Agata K. • Biology tutor
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Briefly outline the process of translation in animal cells.

Translation is the process by which polypeptide chains are built, subsequently forming proteins destined to perform a variety of functions in the body. It involves 3 main steps: initiation, elongation, and t...
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Answered by Lucile S. • Biology tutor
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What are the similarities and differences between prokaryotic and eukaryotic cells? State the name and the function of structures found exclusively in eukaryotes.

Both prokaryotic and eukaryotic cells have a nucleus which is responsible for controlling cellular activity.Both cell types also have ribosomes which produce proteins and both are bound by a cell membrane.Eu...
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Answered by Margeoux D. • Biology tutor
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