Protoplasm represents________________?
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Answer: C. Crysto colloidal solution
Explanation
Protoplasm exists as a complex crysto-colloidal solution containing organic and inorganic molecules. Water acts as the continuous dispersion medium holding various proteins and mineral ions. This unique colloidal state allows living cells to maintain dynamic biochemical reaction pathways. Purkinje coined the term protoplasm to describe the living substance inside plant and animal cells. Colloidal solutions exhibit properties intermediate between true solutions and heterogeneous suspensions. Proteins and nucleic acids form large suspended colloidal particles within the cellular matrix.
Cellular metabolism relies on the fluid yet structured nature of the protoplasmic matrix. Extreme temperatures can cause protoplasm to coagulate, resulting in irreversible cell death. Biologists study protoplasmic streaming to observe intracellular transport mechanisms in plant cells. Solution alone fails to capture the complex colloidal nature of the living protoplasm. Semi-solid is inaccurate because protoplasm exhibits dynamic fluid and sol-gel properties. Colloidal solution is less precise than the specific crysto-colloidal classification term.
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