The fluid portion of the chloroplast outside of the thylakoids is known as what?

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Multiple Choice

The fluid portion of the chloroplast outside of the thylakoids is known as what?

Explanation:
The fluid inside the chloroplast but outside the thylakoid membranes is the stroma. This surrounding fluid houses the enzymes for the Calvin cycle, along with chloroplast DNA and ribosomes, and is where carbon fixation occurs using the ATP and NADPH produced by the light-dependent reactions in the thylakoid membranes. The lumen is the interior space of the thylakoid sacs, the matrix belongs to mitochondria, and cytosol is the cytoplasmic fluid of the cell.

The fluid inside the chloroplast but outside the thylakoid membranes is the stroma. This surrounding fluid houses the enzymes for the Calvin cycle, along with chloroplast DNA and ribosomes, and is where carbon fixation occurs using the ATP and NADPH produced by the light-dependent reactions in the thylakoid membranes. The lumen is the interior space of the thylakoid sacs, the matrix belongs to mitochondria, and cytosol is the cytoplasmic fluid of the cell.

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