B5 Cells Flashcards
What are Eukaryotic cells?
Cells that have a nucleus
What are prokaryotic cells?
Cells that don’t have a nucleus
Give examples of eukaryotic cells.
Plant , animal , protist and fungi
What is the largest organelle in the cell?
The nucleus
Which organelles have a double membrane structure?
Nucleus , mitochondria and chloroplasts
Why is there pores in the nucleus membrane?
To allow the passage of large molecules such as RNA or mRNA in and out the nucleus to go to the RER
What is the nucleolus?
The site of the production of rRNA which is how ribosomes are made
What is the mitochondria?
The site of aerobic respiration which is where ATP is released
What are the structures found in the mitochondria?
Cistae which are folds that increase the surface area for enzymes to work.
Matrix where enzymes are found
There are also ribosomes that make the enzymes
What is the function of the Rough Endoplasmic Reticulum?
It has ribosomes on its outer surface where protein synthesis occurs , it also transports proteins around the cell
What is the function of the Smooth Endoplasmic Reticulum?
The site where lipid synthesis and carbohydrate synthesis occurs , they do not have ribosomes on their outer surface
What is the function of ribosomes?
The site of protein synthesis from amino acids
Where are ribosomes found?
They are found freely in the cytoplasm of all cells or as part of the rough endoplasmic reticulum in eukaryotic cells
What is the function of the Golgi apparatus (body)
It modifies , identifies , sorts and sends proteins and lipids produced by the cell into vesicles. The vesicles may be used to form lysosomes
What is the Golgi body made of?
- It is composed of flattened sacs made of membrane , the sacs are fluid filled and pinch off smaller sacs called vesicles at their ends
