Eukaryotes Flashcards
What is the function of the nucleus?
The nucleus controls the cells activities and retain chromosomes.
What is the function of the nuclear membrane?
It has a double membrane with pores to allow transport of mRNA and nucleotides.
What is the function of nucleoplasm?
Cytoplasm like material within the nucleus.
What’s the function of chromatin?
Lous of DNA called histones, which are bound proteins and condense into chromosomes during cell division.
What’s the function of the nucleolus?
It makes RNA which is needed to make ribosomes.
What’s the function of mitochondria?
They are the sites of aerobic respiration.
What’s the function of Cristae?
It provides greater surface area for chemical reactions due to the structure of the inward folds and its double membrane.
What’s the function of endoplasmic reticulum?
It allows transport of materials through cells.
What’s the function of the rough endoplasmic reticulum?
It transports proteins made by the ribosomes (has ribosomes on the outer surface). It’s found in large amounts in cells that make enzymes that may be secreted out of the cell.
What’s the function of smooth endoplasmic reticulum?
It synthesises and transports lipids (fats) and it has no ribosomes on its membrane.
What’s the function of the Golgi body?
It’s for the modification and packaging of proteins for exocytosis (movement out of the cell)
What’s the function of ribosomes?
It’s important s in protein synthesis.
- made up of one large and one small sub-unit.
- manufactured in the nucleolus from ribosonal RNA and protein.
What’s the function of a lysosome?
It contains and isolates digestive enzymes from the rest of the cell.
- uses the digestive enzymes to destroy worn out organelles and foreign material.
- produced when parts of the Golgi body pinch Off
What’s the function of centrioles?
They divide and move to opposite Poles of the cell where they synthesise the microtubules of the spindle.
- found in all animal cells and most protoctists but absent from cells of higher plants.
What’s the function of chloroplast?
Trap light energy which is used to synthesise carbohydrates
