BIOLOGY

• Biology - derived from the Greek word "bios" meaning life and "logos" meaning study and is defined as the science of life and living organisms
• Cells - basic unit of life. All living organisms are either single cells or multicellular organisms composed of many cells working together
• Amyloplast - an organelle in some plant cells that stores starch. Amyloplasts are found in starchy plants like tubers and fruits.
• Cell wall - exists in Plant Cell only. A thick, rigid membrane that surrounds a plant cell. This layer of cellulose fiber gives the cell most of its support and structure. The cell wall also bonds with other cell walls to form the structure of the plant.
• Centrosome - a small body located near the nucleus. Has a dense center and radiating tubules. The centrosome is where microtubules are made.
• Cell membrane - is the semi-permeable membrane that is present within the cell wall. It is composed of a thin layer of protein and fat. It plays an important role in regulating the entry and exit of specific substances within the cell.
• Chlorophyll - a molecule that can use light energy from sunlight to turn water and carbon dioxide gas into sugar and oxygen (this process is called photosynthesis). It is usually colored green.
• Chloroplast - an elongated or disc-shaped organelle containing chlorophyll. Photosynthesis takes place in the chloroplasts.
• Cytoplasm - jellylike material outside the cell nucleus in which the organelles are located.