Chlorophyll molecules are found embedded in:

Explanation

Chlorophyll molecules are crucial for the light-dependent reactions of photosynthesis and are located in the thylakoid membranes within chloroplasts. These membranes provide the structure needed to organize chlorophyll and other pigments to capture light energy efficiently. The outer and inner chloroplast membranes, while essential for chloroplast structure and function, do not contain chlorophyll. 'Lamellar membranes' is a more general term and does not specifically refer to the location of chlorophyll in the process of photosynthesis.