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Question
cells can be divided into two main types: eukaryotic and prokaryotic. in eukaryotic cells, dna molecules are condensed into multiple linear chromosomes and are contained within a membrane - bound nucleus. in prokaryotic cells, a single continuous loop of chromosomal dna is located in a central area that is not surrounded by a nuclear membrane.
while eukaryotic and prokaryotic cells differ, there are some traits that all cells share:
- every cell is surrounded by a thin cell membrane.
- a gel - like cytoplasm fills all cells.
- all cells have small structures called ribosomes floating in their cytoplasm. ribosomes make proteins.
this diagram shows a yeast cell and a bacterial cell.
complete the sentence.
the yeast cell is ____ and the bacterial cell is ____.
prokaryotic...eukaryotic
eukaryotic...prokaryotic
prokaryotic...prokaryotic
eukaryotic...eukaryotic
- Yeast cells are eukaryotic. They have a membrane - bound nucleus (as shown in the diagram with a distinct nucleus - like structure) which is a key feature of eukaryotic cells.
- Bacterial cells are prokaryotic. They lack a membrane - bound nucleus (the DNA is in a central area not surrounded by a nuclear membrane as described in the text and shown in the bacterial cell diagram).
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eukaryotic...prokaryotic