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Mitochondrial inner membrane encloses.
Inner membrane wraps the MATRIX; Stroma is in chloroplast; Cytosol is in cytoplasm!
Each mitochondrion is a double-membrane-bound structure with an outer membrane and an inner membrane dividing its lumen into two aqueous compartments: 1. The intermembrane space: The narrow region situated between the outer and inner membranes. 2. The inner compartment: The central space enclosed by the convoluted inner membrane, which is packed with a dense homogeneous proteinaceous ground substance known as the MATRIX.
1. Cytosol: The soluble fluid portion of the cell cytoplasm outside all organelles. 2. Mucus: Viscous slippery secretion produced by goblet cells and mucous membranes in animal tissues. 3. Aqueous humor: The clear fluid filling the space in the front of the eyeball between the lens and the cornea.
Mitochondrial inner membrane encloses the matrix.
Diagnose every choice: Know exactly why the right option works and why distractors fail.
Exact anatomical definition of the inner mitochondrial lumen.
Incorrect. Cytosol is the main fluid of the cytoplasm, outside the mitochondrion.
Incorrect. Mucus is an extracellular animal fluid secreted by mucous glands.
Incorrect. Aqueous humor is ocular fluid in the anterior chamber of the eye.
Both mitochondria and chloroplasts are double-membrane organelles: Mitochondria enclose the MATRIX; Chloroplasts enclose the STROMA.
"The inner membrane of mitochondria encloses the matrix where Krebs cycle enzymes reside."
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