Question about organelles from Destroyer

[Roy Williams]

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Bio question 406 in 2015 destroyer asks which organelle is present in both eukaryotes and prokaryotes. The answer was ribosome (which I agree with), but another answer choice is cell wall.

Why couldn't it also be that since plant cells are eukaryotes and have a cell wall, plus some bacteria also have cell walls and they are prokaryotes?

Thanks!

 

[mouse rat]

Ribosome is a better answer since the cell walls in prokaryotes vs. eukaryotes are more structurally different than for ribosomes. Bacterial cell walls are made with peptidoglycan, a polymer of a monosaccharide with amino acids. Eukaryotic cell walls are typically made of cellulose, hemicellulose, or pectin.

 

[dentalstudent2021]

careful here....not all Eukaryotes have cell walls (animals don't have cell walls.)

 

[Roy Williams]

Ribosome is a better answer since the cell walls in prokaryotes vs. eukaryotes are more structurally different than for ribosomes. Bacterial cell walls are made with peptidoglycan, a polymer of a monosaccharide with amino acids. Eukaryotic cell walls are typically made of cellulose, hemicellulose, or pectin.

Thanks!

 

[Roy Williams]

careful here....not all Eukaryotes have cell walls (animals don't have cell walls.)

Yeah I knew that, I was just confused about the questions because it doesn't say which are always present, just which are present. And at times, both. So that's why I was asking.