Question

Which sequence correctly increases complexity in the level of biological organization?
a. atoms, molecules, cells, tissues, organs
b. molecules, atoms, cells, organs, tissues
c. atoms, molecules, cells, organs, tissues
d. atoms, molecules, organs, tissues, cells
e. atoms, molecules, tissues, organs, cells

Answer 1

The correct sequence of increasing order of complexity in the level of the biological organizations is option a.  atoms, molecules, cells, tissues, organs.

At the biological organization, there are many different levels of organization within organisms, in this case, the level is based on smaller and basic building blocks and becomes more complex in increasing order.

•  Atoms are the smallest unit of the organization and least complex level of the biological organization;

• Molecules are more complex than atoms but least complex to cells as various types of molecules form cells.
• the cell is the basic building unit of every living organism.
• A group of the same type of cells performs the same function together to form tissues
• When tissues aggregate or are organized to form a structure it is called organs which is the most complex among given options.

Thus, the correct answer is option a. atoms, molecules, cells, tissues, organs.

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