Final answer:
In the extracellular environment, dissolved molecules, proteins, polysaccharides, and fluid are present. Organelles are not found in this environment as they reside within cells.
Step-by-step explanation:
The compartments that can be found in the extracellular environment include:
- Dissolved molecules: These are small molecules like NaCl, NaHCO3, glucose, and urea that are present in the extracellular fluid (ECF).
- Proteins: Plasma proteins are a significant component of blood plasma within the ECF, contributing to osmotic balance and other functions.
- Polysaccharides: These are often attached to the exterior surfaces of cell membranes and are involved in cellular communication and other extracellular functions.
- Fluid: This refers to the extracellular fluid itself, which includes interstitial fluid and blood plasma, and serves as the medium for dissolved molecules and cells.
Organelles are not found in the extracellular environment as they are located inside the cell. Extracellular fluid surrounds cells and is involved in transporting substances, as well as in maintaining the osmotic balance and the pH.