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Attempt either A or B - Scottish Highers Biology - Question 5 - 2023
Question 5
Attempt either A or B. Write your answer in the space below. A Write notes on the organisation and location of DNA in prokaryotic and eukaryotic cells. OR B Write... show full transcript
Worked Solution & Example Answer:Attempt either A or B - Scottish Highers Biology - Question 5 - 2023
Step 1
Write notes on the organisation and location of DNA in prokaryotic and eukaryotic cells.
Answer
Organisation and Location of DNA
Prokaryotic Cells
- Prokaryotes have circular chromosomes and plasmids.
- DNA is found in the cytoplasm since prokaryotes do not have a defined nucleus.
Eukaryotic Cells
- Eukaryotes have linear chromosomes.
- The linear chromosomes are located within the nucleus, separated from the cytoplasm.
- In eukaryotic cells, linear chromosomes/DNA are coiled and wrapped around proteins called histones, forming a complex known as chromatin.
- Eukaryotic cells can also possess circular DNA in their mitochondria or chloroplasts.
- Yeast, an example of a eukaryote, can have plasmids as well.