Biology · Cell Biology - Protoplasm
Which four elements mainly constitute about 99% of the protoplasm?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1Oxygen, Carbon, Hydrogen, and Calcium
- 2Oxygen, Carbon, Hydrogen, and Nitrogen✓
- 3Oxygen, Nitrogen, Hydrogen, and Phosphorus
- 4Carbon, Hydrogen, Nitrogen, and Sulfur
Correct answer
Oxygen, Carbon, Hydrogen, and Nitrogen
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