They also produce cholesterol and breakdown fatty acids. In its most compacted form, the chromatin is called the chromosome. The nucleoli are the sites of ribosome manufacture. The nucleoli consist of manufactured ribosomes, DNA, granules and fibers. The nucleoplasm consists of water molecules used t make nucleic acids, ribosomes and other nuclear material.
Mitochondria are membranous organelles in which aerobic cellular respiration occurs.
Thus, this organelle is the site of ATP production and oxygen consumption. Chloroplasts are membranous organelles containing chlorophyll, a pigment in which photosynthesis occurs. Photosynthesis is the process by which light energy is converted to chemical-bond energy. Chemical-bond energy is found in food molecules. Ribosomes are non-membranous organelles on which proteins are manufactured.