Flashcards in Organelle Functions Deck (14):
- Double Membrane
- communicates with surrounding cytoplasm via nuclear pores
- Holds DNA responsible for providing cell with unique characteristics
- prominent structure in the nucleus
- produces ribosome is that leave necklace and attach to the rough endoplasmic reticulum
- "Soup"which organelles reside within
- Majority of cellular metabolism occurs here
- made of microtubules which become spindle fibres, which are used to separate DNA strands
- Membrane bound structure with a single membrane
- Package macromolecules for transport elsewhere in cell
- Protective barrier from water for phospholipids which are hydrophobic.
- Presence of proteins crucial to cell activities, receptors for odours, tastes and hormones.
-pores to control movement of materials through cell.
- folds within double membrane (Cristae) aware sugar is combined with oxygen to provide energy for the cell
- Membrane bound sac that plays role in intracellular digestion, release of cellular waste products.
- Larger in plant cells, regulates turgor pressure, collects water, stores nutrients
- Rigid protective wall that provides and maintains the shape of plant cells and serves as a protective barrier.
- Fluid stored in vacuole pushes against cell wall, creating turgor pressure.
- Contains chlorophyll, responsible for plants green colour and ability to absorb sunlight into energy through process of photosynthesis.
Smooth Endoplasmic Reticulum
- Network of membrane bound vesicles and tubules.
- Differing functions depending on cell type, such as lipid and steroid hormone synthesis.
E.g. breakdown of toxins in liver cell
Rough endoplasmic reticulum
- Appears rough due to ribosomes on its surface
- Proteins synthesised on ribosomes collect in endoplasmic reticulum for transport through cell.
- Site of protein synthesis
- messenger RNA from nucleus moves along ribosome where transfer RNA add amino acid molecules to protein chain.