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What are the key features of eukaryote DNA?

DNA, or deoxyribonucleic acid, is a doubled-stranded helix made up of nucleotides. Each nucleotide has one of four bases attached to it. The bases of the nucleotides of one strand base pair to the compliment...
JT
Answered by Jess T. • Biology tutor
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What is the difference between diffusion and osmosis?

Diffusion is a passive process whereby molecules move from areas of high to areas of low concentration, down the concentration gradient. Osmosis is also a passive process however only refers to movement of w...
RN
Answered by Roisin N. • Biology tutor
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Describe similarities and difference between plant and Aminal cells

Similarities both are eukaryotic cells and therefore have a nucleus they both have cell membranes which can control what enters and exit the cell they both contains cytoplasm - this is where reactions is the...
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Answered by Sara B. • Biology tutor
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describe the structure of prokaryotic cell (4 marks)

they don't have a nucleus, the DNA is present in cytoplasm. prokaryotic cell has a cell membrane that controls movement of molecules in and out of the cell. prokaryotic cells also have cell walls that provid...
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Answered by Julia L. • Biology tutor
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Explain how Natural Selection occurs?

Random mutations with a certain species genetic pool will lead to variation within the species. These variations can lead to certain organisms adapting to their environment better. The fittest will survive (...
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Answered by Rhea M. • Biology tutor
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