Eukaryotic cell organelles
- Created by: BeansForDeans
- Created on: 07-05-14 20:53
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- Eukaryotic Cells (animal & plant)
- Nucleus
- Largest organelle
- Surrounded by nuclear envelope - has nuclear pores
- Contains chromatin (made of DNA and proteins) to form chromosomes
- Has nucleolus (dense spherical structure) - makes RNA and ribosomes
- Centrioles
- Not in plant cells
- For cell division
- Small tubes of protein fibres (microtubules)
- Form spindle fibres (move chromosomes in cell division)
- Rough ER
- Single flattened membrane bound sacs - cisternae
- Cisternae are continuous with outer nuclear membrane
- Cisternae are studded with ribosomes which make proteins
- Transports proteins to golgi
- Cisternae are studded with ribosomes which make proteins
- Cisternae are continuous with outer nuclear membrane
- Single flattened membrane bound sacs - cisternae
- Smooth ER
- Single flattened membrane bound sacs - cisternae
- No ribosomes
- Makes lipids and seroids
- Golgi Apparatus
- Stack of flattened sacs enclosed by a membrane
- Formed by fusion of vesicles from rER
- Receives proteins from rER and modifies them
- Packages these proteins into vesicles
- Lysosome
- Involved in breakdown of unwanted substances within cell
- Spherical sacs enclosed by a membrane
- Contains digestive enzymes
- Mitochondria
- Spherical or sausage shaped
- Double membrane with a fluid filled space between
- Inner membrane folded in finger like projections called cristae
- Central area contains a jelly - Matrix
- Where aerobic respiration occurs - make ATP
- Chroloplasts
- Plant cells only
- Site of photosynthesis
- Double membrane with fluid filled in between them
- Inner membrane is continuous with a network of flattened sacs called thylakoids
- Stack of these thylakoids is called a granum
- Chlorophyll molecule is present on the thylakoid membranes and intergranal membranes
- Ribosomes
- Tiny organelles
- 2 subunits
- On ER or free in cytoplasm
- Site of protein synthesis
- Nucleus
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