BIO NMDCAT Concept of Evolution

nmdcat.online July 14, 2026

42. Which statement best explains why the earliest cells were most likely prokaryotic?

A. Prokaryotic cells are structurally simpler than eukaryotic cells.

✓

B. They possess membrane-bound organelles.

C. They require oxygen for survival.

D. They evolved from multicellular organisms.

📝 Explanation

Correct: Simpler organization makes prokaryotes the most likely earliest cells. B: Prokaryotes lack membrane-bound organelles. C: Early Earth lacked oxygen. D: Multicellular organisms evolved much later. Concept: First living cells.

📖 Additional Information

Prokaryotic cells are structurally simpler than eukaryotic cells.
They possess membrane-bound organelles.
They require oxygen for survival.
They evolved from multicellular organisms.

Correct: Simpler organization makes prokaryotes the most likely earliest cells. B: Prokaryotes lack membrane-bound organelles. C: Early Earth lacked oxygen. D: Multicellular organisms evolved much later. Concept: First living cells.

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