1. It synthesizes proteins by producing and storing RNA (Ribonucleic acid). At the same time, it orders ribosomes to synthesize proteins.   Nucleolus   Chromoplast   Mitochondrion   Nuclear Membrane   Hint Half-n-half Clue   2. It contains chromatin fibres, which are made up of DNA (Deoxyribonucleic acid). After cell division takes place, these chromatin fibres undergo certain structural changes, and are called chromosomes. These chromosomes carry the hereditary information of the genes.   Centrosome   Nuclear Membrane   Nucleoplasm   Leucoplast   Half-n-half Clue   3. It is semi-permeable, allowing substances to enter and leave the nucleus of the cell. It also provides protection to the nucleus of the cell.   Nuclear Membrane   Chromoplast   Golgi Apparatus   Nucleoplasm   Half-n-half Clue   4. It performs intracellular digestion. It also helps in destroying foreign substances.   Lysosome   Nucleoplasm   Nucleolus   Nucleus   Half-n-half Clue   5. It is the site of ATP (Adenosine triphosphate) synthesis. It also synthesizes respiratory enzymes.   Mitochondrion   Vacuole   Nucleoplasm   Leucoplast   Half-n-half Clue   6. It is a plastid. It helps in the storage of starch.   Leucoplast   Mitochondrion   Nuclear Membrane   Chromoplast   Half-n-half Clue   7. It provides shape to the cell. It is semi-permeable, regulating the entry and exit of substances, namely solutes and ions.   Ribosome   Vacuole   Cell Membrane   Chromoplast   Hint