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How would you test a seed for lipids?

To test for presence of lipids, you use an emulsion test.First, crush the seen to release the contents.Next, add ethanol and shake.Then add water and shake again.If lipids are present in the seed, the mixtur...
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Answered by Caitlin P. • Biology tutor
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Describe the process of DNA replication in a Eukaryotic cell. (6 Marks)

Firstly, the double stranded helical structure of the DNA is unwound by an enzyme called DNA helicase. This process of separation requires the breaking of the hydrogen bonds which link the base pairs. After ...
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Answered by Callum O. • Biology tutor
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Compare a eukaryotic cell with a prokaryotic cell

Both the eukaryotic and prokaryotic cells have a cell surface membrane and contain cytoplasm and ribosomes. However, eukaryotic cells contain membrane bound organelles, such as mitochondria, nuclei, endoplas...
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Answered by Rebecca O. • Biology tutor
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Before a cell divides during the process of mitosis, it must duplicate its DNA. Describe the process of DNA replication.

DNA helicase breaks the hydrogen bonds between the two strands of the DNA helix, separating them. Each strand can then act as a template for the synthesis of new DNA. Free nucleotides can then attach to the ...
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Answered by Jen C. • Biology tutor
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Describe & Compare the differences in the structure & location of DNA & RNA

Although DNA and RNA belong to the same class of biological molecules, they have many differences in their structure and the location at which they are found. Firstly, RNA is a single polynucleotide chain wh...
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Answered by Alisha H. • Biology tutor
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