Question

exploration activity

1. where is dna located within a eukaryotic cell?

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1. what is the main function of the rough endoplasmic reticulum?

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1. do all eukaryotic cells have cell walls? explain.

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Explanation:

• Question 5: In eukaryotic cells, DNA is mainly located in the nucleus. Additionally, mitochondria (in most eukaryotes) and chloroplasts (in plant cells) also contain some DNA.
• Question 6: The rough endoplasmic reticulum (RER) has ribosomes attached to its surface. Its main function is to synthesize proteins. The ribosomes on the RER produce proteins that are either secreted out of the cell or inserted into the cell membrane.
• Question 7: No, not all eukaryotic cells have cell walls. For example, animal cells (which are eukaryotic) do not have cell walls. Plant cells (eukaryotic) have cell walls made of cellulose, fungi (eukaryotic) have cell walls made of chitin, but animal cells lack this structure.

Answer:

1. DNA is mainly in the nucleus. Mitochondria (in most eukaryotes) and chloroplasts (in plant cells) also have some DNA.
2. The main function of the rough endoplasmic reticulum is protein synthesis.
3. No. Animal cells (eukaryotic) do not have cell walls. Plant cells (eukaryotic) have cellulose - based cell walls, fungi (eukaryotic) have chitin - based cell walls, but animal cells lack cell walls.