1 When struck, crystal produces a musical ring. 2  Glass does not. 3  If you wet your finger and run it around the rim of a crystal glass it will also produce a musical tone. 4  Crystal can be worked thinner than glass, so if the rim of a piece is exceptionally thin it's probably crystal.
Nucleus: They are the membrane bound organelles, which are found in all eukaryotic cells. It is the very important organelle of a cell as it controls the complete activity of a cell and also plays a vital role in reproduction.t forms a connection between nuclear envelope and the cell membrane of a cell. Mitochondria: They are rod shaped organelles, plays an important role in releasing energy and they are the powerhouse of a cell. In plant cell, they are the sites of cellular respiration.
The nucleus, often thought as as the centre of a cell, contains all the genetic. information of a cell (the cells chromosomes), it controls the activities of the cell. Cytoplasm surrounds the nucleus within the cell walls. It is where reactions take place in the cell.The cell membrane controls the movement of chemicals in and out of the cell. The cell wall, which is made up of cellulose, strengthens the cell.Chloroplast contain chlorophyll, and are used in photosynthesis.t is where reactions take place in the cell. The cell membrane controls the movement of chemicals in and out of the cell. The cell wall, which is made up of cellulose, strengthens the cell. Chloroplast contain chlorophyll, and are used in photosynthesis.