A student in a biology class is examining a cell under a microscope. The student can identify a cell membrane, cytoplasm and DNA. The cell does not seem to have any membrane bound organelles. What type of cell is the student most likely looking at under the microscope? Explain your answer.

Prokaryotic cells

Explanation:

The sutdent is looking at a prokaryotic cell because prokaryotic cells do not have any membrane bound orgenells but have only nucleus, cytoplasm, and cell membrane.

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answer: the blood-brain barrier is a layer of specialized membranes and cell processes designed to keep undesirable substances from passing from the bloodstream into the precious tissues of the brain. while the blood-brain barrier does keep most bad things out of the central nervous system, it is not impermeable.

explanation:

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