cells+in+action+glossary

 This section is for you all to keep an up to date glossary of the relvant terminology we cover in this area of study. It is important that you use your own words to explain the meaning of any terms.


 * PROKARYOTE** - organism composed of cells that lack a membrane-bound organelles and a distinct nucleus.

Alrighty, year 11 class, what is your story? Based on your quiz results it is clear that you are not completely on top of the terminology. Perhaps the fact that this page is blank may have something to do with it. I would like to see each of you put 5 definitions on this page before Wed 27th Feb. That way you will have some 50 words in your glossary even though we have covered many more already. So get to it! Someone may want to create subheading for groups of terminology that relates to a particular concept.

Diffusion:** Movement of substances from an area of high concentration to an area of low concentration. Adam
 * MOVEMENT ACROSS MEMBRANES:
 * Osmosis:** Movement of water molecules from an area of high concentration to an area of low concentration.
 * Facilitated Diffusion:** Diffusion of a substance with the assistance of a protein in the membrane
 * Active transport:** Involves substances moving through proteins in membranes, from a low to high concentration. It needs an input of energy (ATP)
 * Passive Process:** Requires no input of energy. Diffusion and osmosis are both passive processes.

Mitochondria: Site where energy is produced Nucleus: contains the genetic information (DNA) Chloroplast: In plant cells only, chloroplast is the place where photosynthesis occurs Lysosome: Responsible for cleaning up the cell, breaking down used up parts Endoplasmic reticulum: Transports things around the cell Golgi Apparatus/Body/ Complex: Storage/packaging of materials. Vacuoles: Storage of nutrients and water/fluid Vesicels: Fluid filled sacks carrying various substances. //Other Structural Bits// Plasma Membrane: Barrier that controls what goes in and out of the cell Cytoskeleton: Internal framework that provides shape and structure to the cell. Cell Wall: Doesn't occur in animal cells, used for extra protection and strength.
 * MEMBRANE BOUND ORGANELLES**

__Metabolism:__ The sum of all chemical reactions that occur inside of the cell. __Cellular Respiration:__ the complete breakdown of glucose to provide energy for cells. __Aerobic Respiration:__ A chemical process in which oxygen is used to make energy from carbohydrates (sugars). __Anaerobic Respiration:__ A chemical process in which oxygen is NOT required to make energy. __Photosynthesis:__ Plant process involving the use of light energy to combine carbon dioxide and water to make glucose. __Chemosynthesis: P__roduction of organic compounds from inorganic materials using energy obtained from the oxidation of inorganic compounds.

__4 types:__ Carbohydrates, Proteins, Lipids and Nucleic acids >All contain Carbon and Hydrogen > Cells used basic units to build larger more complex substances.
 * Organic Substances**

I think it would be valuable if you define each of the four types of organic substances as well. VM

>CIRCULATORY SYSTEM< __Arteries:__ A tube of thick muscle walls that carries blood away from the heart __Veins:__ A tube of a thinner muscle layer which carries blood towards the heart, containing valves to prevent back flow of blood __Capillaries:__ Site in which gases and other substances are exchanged __Nephron:__ Tiny tubes that make up a kidney (1 million approx. per kidney) __Kidney:__ bean-shaped organ that assists in the filtration of blood and removal of waste. It consists of three parts; Cortex, (outer-layer) Medulla (mid-region) and Renal Pelvis (middle)

I know it's past 27th Feb, but i thought i'd still contribute LB

Hey LB, this should be in the Functioning organisms glossary, as it is relevant to area of study 2. I have copied it there for you. And the date is irrelevant, any contribution at any time is worthwhile. VM