Which term describes the fluid component of the cytoplasm?

Which term describes the fluid component of the cytoplasm?

• A. Cytosol
• B. Nucleoid
• C. Matrix
• D. Vacuole

Answer: (A)

The fluid component of the cytoplasm is called cytosol. It’s the watery, jelly‑like medium in which organelles are suspended and where many metabolic reactions take place, containing water, ions, sugars, amino acids, and small molecules. The other terms refer to different structures: a nucleoid is the DNA-containing region found in many prokaryotes; the matrix is the inner fluid of mitochondria; a vacuole is a membrane‑bound storage organelle. Cytosol, by contrast, specifically describes the liquid portion of the cytoplasm.

The fluid component of the cytoplasm is called cytosol. It’s the watery, jelly‑like medium in which organelles are suspended and where many metabolic reactions take place, containing water, ions, sugars, amino acids, and small molecules. The other terms refer to different structures: a nucleoid is the DNA-containing region found in many prokaryotes; the matrix is the inner fluid of mitochondria; a vacuole is a membrane‑bound storage organelle. Cytosol, by contrast, specifically describes the liquid portion of the cytoplasm.