Module 3 Flashcards
(93 cards)
Cocci
spherical
Bacilli
rod shaped
Vibrio
curved rod
Spirilla
rigid helices
Spirochetes
flexible helices
Mycelium
multinucleated filamen
Pleomorphic
variable in shape
Diplococci
2 spheres
Streptococci
chain of spheres
Staphylococci
cluster of spheres
Tetrads
groups of 4 (cube)
Sarcinae
groups of 8 (cube)
Coccobacilli
short rods
What is the plasma membrane?
- membrane that encompasses the cytoplasm
What are the 4 functions of the plasma membrane?
- separates cell from its environment
- selectively permeable barrier
- location of vital metabolic processes
- detects and responds to chemicals in surroundings with the aid of receptor molecules
What are integral proteins, what is their function and where are they found?
- protein that passes through both layers of the cell membrane
- acts as a transport channel
- found in cell membrane
What is the different between a peripheral membrane pr- and an integral pr-?
integral pr- DOES pass through membrane whereas other one DOESN’T
What does an peripheral membrane protein do?
regulates signaling
What are Membrane Lipids composed of?
- composed of polar and non-polar ends, making it amphipathic
What are the polar ends of the membrane lipids
They are the head of the lipid and are hydrophilic, meaning they interact with water
What are the non-polar ends of the membrane lipid
They are the tail of the lipid and are hydrophobic, meaning they stay away from water
What are bacterial membranes
highly organized, asymmetric, flexible, dynamic membranes
How do bacterial membranes differ from eukaryotic membranes
bacterial membranes lack sterols and instead contain hopanoids
What are hopanoids?
Sterol-like molecules that stabilize the membrane