Question

what 3 things do all cells have?
cell membrane, mitochondria, er
nucleus, dna, ribosomes
cytoplasm, plasma membrane, ribosomes
cell membrane, proteins, er

Explanation:

To determine what all cells have, we recall cell biology: all cells (prokaryotic and eukaryotic) have a plasma membrane (or cell membrane) to separate the cell from the environment, cytoplasm (the fluid matrix where organelles/cellular components are suspended), and ribosomes (for protein synthesis). Let's analyze the options:

• First option: Mitochondria and ER are eukaryotic - specific, not all cells.
• Second option: Nucleus and DNA - prokaryotes don't have a nucleus (they have nucleoid), so not all cells.
• Third option: Cytoplasm, plasma membrane, ribosomes - matches the universal cell components.
• Fourth option: ER and specific proteins - not universal to all cells.

Answer:

The third option (cytoplasm, plasma membrane, ribosomes)