Question

Biological Organisation starts with
A. Submicroscopic molecular level
B. Cellular level
C. Organismic Level
D. Atomic-level

Answer 1

Hint: Biological Organisation is the hierarchy of complex biological structures that define life according to the reductionist approach. The hierarchy generally extends from atoms to the biosphere. Each level in the organisational hierarchy represents an increase in organizational complexity with each other.

Complete answer:
All the living organisms organized according to their hierarchy are defined as biological Organisation. The biological organization starts with the submicroscopic molecular level, where there are four forms of molecules, i.e. carbohydrates, lipids, proteins, and nucleic acid are organized into organelles of the cell. Therefore Biological organization begins at Submicroscopic molecular level.

So the right option to this question is option A ( Submicroscopic-molecular level).

Additional Information: Biological organisation starts with the sub-microscopic molecular level, passes through the microscopic cellular level and microscopic or macroscopic scheme organismic level and ends in ecosystems and biosphere. The ranks of a biological organisation tell that atoms hold the lowest unit at the molecular level whereas the cells are the smallest unit at a microscopic level. Atoms join to form the molecule. However, from the molecules like carbohydrates, lipids, proteins and nucleic acids, the various organelles are generated. Therefore the biological organisation starts from the submicroscopic molecular levels. Living organisms are arranged from simple organisms to complex organisms. Therefore it is counted under the submicroscopic molecular level. Atoms are made up of particles such as the proton, electron and neutron. Various atoms combine to create a molecule, such as the water molecules, proteins, and sugars found in living things. Molecules are the chemical building blocks of all body structures that sustain human life.

Note:
Typical levels of organization that one finds include the atomic, molecular, cellular, tissue, organ, organismal, group, population, community, ecosystem, landscape, and biosphere levels. The higher level of this scheme is referred to as an ecological organisation concept.