What is the function of ribosomes?
protein synthesis
Structures → cytoplasms bound to ER
What is the function of the nucleus?
controls activity of the cell (stores genetic information)
What is the function of mitochondria?
- where aerobic respiration occurs
- release,transfer energy from respiration
-atp is produced
What is the function of the cytoplasm?
where metabollic reactions occur
What is the function of chloroplasts?
-photosynthesis
-have chlorophyll where light dependent reactions occur
What is the function of the plasma membrane?
- controls organelles entering/leaving the cell
What is the function of the large permanent vacuole?
- regulates osmosis
-contains cell sap, maintenance of turgor, rigid framework of cell - membrane of vacuole = tonoplast
What is the function of the cell wall?
- provides tensile strength
(defence mechanism against pathogens)
What is the function of the vesicles?
-transport and store molecules
(secretary vesicles)
-vesicles transport molecules to plasma membrane
What is the function of the nuclear pores?
- transport molecules in and out of nucleus
What is the function of the centrioles?
- produce the cytoskeleton
-forms spindle for cell division
What is the function of the golgi apparatus?
- modify proteins and package them into vesicles
- always near vesicles
-side where vesicles enter, fuse with golgi = cis face
side where they leave = trans face
structure - stack of cisternae
Exocytosis → secretary products passed out of cell transport vesicle fuses with plasma membrane to allow expulsion of secretion
What is the function of the rough endoplasmic reticulum?
- ribosomes bound to the surface and responsible for synthesis and transport of proteins
What is the function of the cisternae?
-tunnels
- responsible for transport
What is the function of the smooth endoplasmic reticulum?
- responsible for lipid and carbohydrate synthesis and stores them
What is the function of the nucleolus?
- produces ribosomes by synthesising ribosomal RNA (rRNA)
- composed of proteins and RNA
no nucleolus = cell dies
What is the function of the lysosome?
Contains hydrolysing enzymes and breaks down cells, waste materials
Structure -spherical sacs surrounded by a single membrane
What is the function of the cytoskeleton?
- Structure → protein threads, mâché up of microfilament, microtubules
- functions → provides mechanical strength to cell maintaining shape of cell
- movement of cilia and flagella, muscle contractions movement of chromosomes
