A human cheek cell is thin, flat and has a large nucleus that contains the DNA. Its plasma membrane helps the cell to maintain suitable temperature while giving it its shape. Since it is selectively permeable, it only allows certain molecules into and out of the cell.
Producers because they make their own food such as plants..
Answer: cellular respiration happens in the mitochondria and cytoplasm of cells.
Explanation: many organisms, including plants and plankton, per- form oxygen-dependent cellular respiration.