Natural ecosystem : ex a tropical rainforest ( basically anything made my nature ) ; artificial ecosystem : ex an aquarium, a zoo ( every type of ecosystem but man made )
The correct size order from the smallest to the largest is:
Animal cell >> Mitochondrion >> Ribosome >> Hexokinase >> ATP >> O2
- The animal cell size is about 20 to 30 micrometers (μm), although it varies according to the type of the cell.
- The average mitochondria size is approximately 0.75 to 3 μm. The size, number, and structure of mitochondria in an animal cell vary according to type of animal cell.
- The ribosome size is approximately 0.02 μm in diameter.
- An enzyme is a macromolecule whose size is variable (its average size is 3–7 nanometers, i.e., 3-7 nm). A micrometer (μm) equal to 1000 nm.
- The adenosine triphosphate or ATP (the energy coin of the cell, which is composed of a five-carbon sugar, three phosphate groups, and adenine) and molecular oxygen (O2) are both simple molecules whose sizes are very small compared to enzymes.
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