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Cell Structure ch. 6
Terms in this set (23)
What are surface appendages that allow a bacterium to stick to a surface?
fimbriae enable bacterial cells to stick to a surface
What is the function of a bacterium's capsule?
protection; a bacterium's capsule as a protective role
Where is the DNA containing region of the bacterial cell?
The nucleoid region contains DNA; bacteria lacks a nucleus
In bacterium, where are proteins synthesized?
Ribosomes are involved in the manufacture of polypeptides (proteins)
What name is given to the rigid structure, found outside the plasma membrane, that surrounds and supports the bacterial cell?
The cell wall is a rigid supporting structure
What is the bacterial structure that acts as a selective barrier (allowing nutrients nutrients to enter and waste to exit)?
The plasma membrane is selectively permeable
How do you know if a cell is a prokaryotic or eukaryotic?
Whether or not the cell is partitioned by internal membranes
What is the central vacuole's function?
Which organelle plays a role in intracellular digestion?
What are the functions of the smooth ER?
lipid synthesis, calcium ion storage, poison detoxification
What is the function of the rough ER?
What are the functions of the golgi apparatus?
protein modification/sorting and cisternal maturation
What are the functions of the lysosome?
macromolecule digestion and autophagy
Which proteins are synthesized by bound ribosomes?
lysosomal enzyme, insulin, and ER protein
What is the path for a secretory protein?
ER> cis golgi cisternae> medial golgi cisternae> trans golgi cisternae> plasma membrane
Mitochondria are found in..
plant and animal cells, all eukaryotic cells have mitochondria
What is a common trait of chloroplast and mitochondria?
Mitochondria and chloroplasts contain their own DNA and ribosomes.
What are the cilia and flagella of eukaryotic cells composed of?
Eukaryotic cilia and flagella are composed of microtubules.
Which cell junction forms a barrier to the passage of materials?
Tight junctions form a barrier that prevents fluids from moving between cells.
What is the primary role of desmosomes?
Desmosomes bind animal cells together
What aids in the coordination of the activities of adjacent animal cells?
Gap (communicating) junctions; Gap junctions allow for the passage of material between cells, thus facilitating communication between these cells.
Cyanide binds to at least one molecule involved in producing ATP. If a cell is exposed to cyanide, most of the cyanide will be found within the
Which cell would be best for studying lysosomes?
phagocytic white blood cells
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