With different chemical arrangements and formation Of complex molecules, the life emerges on the level of the ?
Correct answer: A. Cells
- A. Cells
- B. Tissues
- C. Organs
- D. Organ System
Explanation
The cell is the first level of biological organization regarded as living because it can carry out essential life processes. Molecules and organelles contribute to life but cannot independently perform all cellular functions. Students may choose organelle because complex molecules form organelles, but organelles are below the cellular level.
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About Animal and Plant Cell
Animal and plant cells share a plasma membrane, cytoplasm, nucleus, ribosomes, mitochondria and endoplasmic reticulum, but plant cells also have a cellulose cell wall, chloroplasts and a large permanent vacuole. Questions cover organelle structure and function, differences between the two cell types, and how membranes control movement of substances.
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