GLOSSARY

Use this page to define key content vocabulary.

Chapter 2.1 Vocab:


 * Osmosis**: The diffusion of water through the cell membrane.
 * Passive Transport**: The diffusion of particles through the proteins. The particles move from high concentration to low concentration.
 * Active Transport**: The movement of particles through proteins against the normal direction of diffusion.
 * Endocytosis**: The cell membrane surrounds a particle and encloses it in a vesicle.
 * Exocytosis**: Vesicles are formed at the E.R or Golgi complex and carry the particles to the cell membrane.
 * ATP**: Stores energy in a form that cells can use.

Chapter 2.2 Vocab: Photosynthesis:

====Photosynthesis is an event which occurs to help a plant produce energy. the chloroplast uses carbon dioxide and glucose, and obsorbs sunlight, to produce energy. ====

Cellular Respiration: Cellular Respiration occurs when food is being broken down, and oxygen IS used in the process.

Fermentation: Fermentation occurs when food is being broken down, and oxygen is NOT used in the process. Tissue- A group of cells working together to perform a certain job Organ- A group of tissues working together to do a certain job Organ System- A group of organs working together to perform a certain job in the body Organism- A being that is independent; it can live on its own Population- A group of similar organisms in one enviroment Community- A group of populations in a similar area Ecosystem- groups of organisms in an area Unicellular- an organism with only one cell Multicellular- an organism with more than one cell
 * __Vocab__**

Chapter 2.3 vocab. Cell Cycle- The life of a cell; in eukaryotes it consists of chromosome duplication, mitosis and cytokinesis. Centromere- The region that holds cromatids together when a chromosome is duplicated. Chromatids- Identical chromosome copies. Chromosomes- A coiled structure of DNA and protein that forms in the cell nucleus during cell division. Homologous- Chromosomes with matching information. Mitosis- Nuclear division in eukaryotic cells in which each cell receives a copy of the original chromosomes.