Biochemical structures {cell, biology} surrounded by membrane have 750 small molecules and 2000 macromolecules. Living cells have diameter 10^-5 meters and mass 10^-14 grams. Cells are sensitive to temperature change, chemicals, light, and touch. Chemical reactions take 0.001 seconds. Sunlight provides energy, directly for plants and indirectly for animals.
movement
Cells can move by amoeboid motion, cilia, cyclosis, flagella, or pinocytosis.
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Date Modified: 2022.0224