Mon, 29/07/2013 - 17:43
#1
organelles
please explain organelles to me simply because everytime i look them up i cant understand the explainations 
thank you for helping if you have a chance! these are the organelles i have to research:
-ribosomes
-plasma membrane
-smooth and rough endoplasmic reticulum
-Lysosome
-golgi body
-chloroplasts
- mitochondrion
I am new to revision world and i have an entry test for teeside high and my weakest point is science i have a test on science,english and maths i am just looking for some genral tips for the entry exam if you have any. thank you
Hey
I can help with some, such as ribosomes, chloroplasts and mitochondrion.
Robosomes is an organelle in which protein synthesis takes place. Protein synthesis is the process whereby proteins are produced, or synthesized, in living things according to "directions" given by DNA (deoxyribonucleic acid) and carried out by RNA (ribonucleic acid) and other proteins.
So baisically the organelle where protein is made or duplicated.
Choroplasts contains chlorophyll, and the job of a chloroplast is to absorb light energy to make food. So this is where the majority of photosynthesis takes place.
Mitochondrion is where energy is released in respiration. Mitochondria are the energy house of a cell. It is present in almost all eukaryotes, but not prokaryotes. What is weird about them is that actually they have their own DNA strands other than the from the cell nucleus, which means they produce their own enzymes. Isn't that weird?
Hope i helped:)