* DNA is found here
* RNA is transcribed in the nucleus
* Transcribed RNA is then transported out of the nucleus through the nucleus pores.
* The nucleolus is a visible dark spot in the nucleus and it is where ribosome forms.
* Ribosomes are sites of protein synthesis, and where RNA is translated to protein.
* Protein synthesis is very important to the cell and hundreds or thousands of ribosomes may exist in the cytoplasm.
* It may also be found bounded to the endoplasmic reticulum.
* Ribosomes spit into two when not synthesizing protein
* Mitochondria are sites of aerobic respiration.
* They are the major energy production center in cell.
* Mitochondria have 2 membranes, inner and outer membrane.
* There are many folding in the inner membrane which serves to increase the surface area of membrane on which membrane-bound reactions can take place.
* Mitochondria have their own DNA and their own ribosome; and those ribosomes are more similar to bacterial ribosome than to eukaryotic ribosome.
* They produce the ATP which acts as a battery to the cell.
* Chloroplasts are sites of photosynthesis.
* They also have double membrane.
* They are also the power house of the plant cell.
* Chloroplasts works in line with mitochondrion to provide the cell with energy.
* They also create ATP via the thylakoid membrane during photosynthesis.
Endoplasmic Reticulum (ER)
* The ER is like a transport tunnel for molecules targeted for certain modification and specific final destination.
* There are 2 type of ER, the rough ER and the smooth ER.
* The rough ER appears rough due to the presence of ribosomes on the membrane surface.
* Smooth ER is important in the synthesis of lipids and membrane proteins.