Biology · Cell Structure and Functions

What key structural conclusion did the British zoologist Theodor Schwann report about animal cells in 1839?

Verified Solution4 OptionsUpdated: October 2026👁️1 View

1They contain large green chloroplasts similar to plant cells
2They are enclosed by a thin outer layer, which is known today as the plasma membrane✓
3They lack a well-defined nucleus throughout their lifespan
4They are uniformly composed of multiple interconnected vascular tissues

Correct answer

They are enclosed by a thin outer layer, which is known today as the plasma membrane

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