Cell Parts Quiz Flashcards
Prokaryotes
cells that lack membrane bound organelles
(ie nucleus)
• bacteria, archaea
Eukaryotes
cells with membrane bound organelles
•plants, animals, fungus
organelle
Cell parts with specific structures and functions
Nucleus
- Located in the center of the cell
* houses genetic material in form of DNA
Nuclear Envelope
Surrounds the Nucleus
Nucleolus
the dark region inside the nucleus
•makes small organelles called ribosomes
Chromatin
Coiled strands of DNA inside the nucleus
•turns into chromosomes when cell wants to divide
Cell membrane
A protective layer that covers the cell’s surface and controls what moves in and out of the cell
Cytoplasm
The region b/w nucleus and outer membrane
•holds most organelles,
Cytosol
solution of water, ions, macro molecules
•cytoplasm structure
Cytoskeleton
supports structure, made of 2 fiberous proteins •tubes called microtubule •rods called microfilament provides mechanical support, holds many organelles in place, can help the cell move
Ribosomes
Make the cell’s protein, smallest organelle
•all cells have
•suspended & free floating in the cytoplasm
•attached to the rough endoplasmic reticulum
•made of proteins and RNA
•lacks membrane, found in both eukaryotic and prokaryotic cells
sER
Cell detox center-breaks downs toxin, makes lipids, hormones, sterols
•S:Membrane folded as channels
•L:Part of endomembrane system in cytoplasm
rER
Modifies proteins, gives globby shape
•Folds or adds parts, can be released into blood
•L:part of endomembrane system in the cytoplasm
•S:membrane folded as channels, ribosomes attached to outside of the rER
Golgi Body
acts like UPS station, one side serves as a receiving dock for vesicles transported from ER. Enzymes in Golgi refine & modify the ER products by altering the chemical structure
•L:part of endomembrane system in cytoplasm
•S: a stack of flat membrane stacks, looks like stack of pita
•products are either fused w/plasma membrane & released into blood or to another organelle/lysosome