Question

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which cell structures are seen in all cell types? choose four correct answers. ribosomes nucleus dna cell membrane cytoplasm

Explanation:

To determine cell structures present in all cell types (prokaryotic and eukaryotic):

1. Ribosomes: All cells (prokaryotes and eukaryotes) need ribosomes for protein synthesis.
2. DNA: All cells have genetic material (DNA) to store and transmit genetic information.
3. Cell Membrane: All cells are enclosed by a cell membrane (or plasma membrane) to regulate substance entry/exit.
4. Cytoplasm: All cells have cytoplasm (the fluid - like matrix) where metabolic reactions occur.

The nucleus is only present in eukaryotic cells (not prokaryotic), so it is excluded.

Answer:

• ribosomes (checked)
• DNA (checked)
• cell membrane (checked)
• cytoplasm (checked)