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. The Cytoskelleton of skeletal system of the cell consist of microtubules, microfilaments and intermediate filaments. The cytoskeleton gives the cells their shape, support and movement. Microtubules are also essential in the separation of chromosomes during mitosis.