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BIO NMDCAT Concept of Evolution
nmdcat.online July 14, 2026

16. During the origin of life, protocells are considered important because they:

A. Produced oxygen through photosynthesis.
B. Represented an intermediate stage between non-living molecules and true cells.
✓
C. Were the first multicellular organisms.
D. Already possessed complex nuclei.

📝 Explanation

Correct: Protocells showed primitive organization before true cells evolved. A: Photosynthesis evolved later. C: Multicellularity appeared much later. D: Nuclei evolved in eukaryotes. Concept: Protocells.

📖 Additional Information

  • Produced oxygen through photosynthesis.
  • Represented an intermediate stage between non-living molecules and true cells.
  • Were the first multicellular organisms.
  • Already possessed complex nuclei.

Correct: Protocells showed primitive organization before true cells evolved. A: Photosynthesis evolved later. C: Multicellularity appeared much later. D: Nuclei evolved in eukaryotes. Concept: Protocells.

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