Membrane- Bound Organelles Flashcards
Role of the nucleus?
Stores DNA
What is the nucleus surrounded by? What is its role?
The nuclear envelope. It has pores in it to let (e.g) mRNA out and steroid hormones in.
What is the role of the nucleolus?
Contains a dense region of RNA, responsible for making ribosomes
What is the role of the rough endoplasmic reticulum?
It provides a large SA for ribosomes to protein synthesise.
What is the role of the smooth endoplasmic reticulum?
Responsible for carbohydrate and lipid synthesis.
What is the role of the Golgi apparatus?
It receives protein from the RER at the cis face, processes, modifies, and then transports proteins out of the trans face in secretory vesicles.
What is the role of mitochondria?
Site of aerobic respiration where ATP is made
What is the role of chloroplasts?
Site of photosynthesis in plant and algae cells
What are lysosomes?
Membrane packets which transport digestive enzymes within cells to destroy other organelles
What are vesicles?
Membrane packets which transport substances within/out of cells
What is the role of the large permanent vacuole?
It stores cell sap to keep cells turgid
What is the cell surface membrane?
A bilayer which contains entry/exit of substances to cell
