Chapter 3- Bacteria and Archaea Flashcards
Prokaryotes differ from eukaryotes in blank and blank
Size and simplicity
Cell shape
Morphology
Spherical morphology
Coccus
Cylindrical morphology, rods
Bacillus
Spiral morphology, rigid helices
Spirillum
Cocci pairs
Diplococci
Cocci Chains
Streptococci
Cocci grape-like clusters
Staphylococci
4 cocci in a square
Tetrads
8 perpendicular cocci
sarcinae
2 Bailli
Diplobacilli
Chains of Bacilli
Streptobacilli
Several parallel Bacilli
Pallisade
Very short rods
Coccobacilli
Comma shaped, resemble rods
Vibrios
Flexible helices
Spirochetes
Network of long, multinucleate filamentous cells
Mycelium
Organisms that are variable in shape
Pleomorphic
Advantage of being a small cell
Greater surface area to volume ratio, allows for greater nutrient exchange
Cell envelope consists of
Structures exterior to cell wall, cell wall, cell membrane
Cell membrane functions
Barrier, regulate transport, energy metabolism, protein attachment, and chemical receptors
Membrane that is somewhat liquid, somewhat solid
Fluid mosaic model
Lipids with polar and non polar ends
Amphipathic lipids
Polar ends
Hydrophilic
Non polar tails
Hydrophobic
Cytoplasmic membrane has blank but not blank
Hopanoids, sterols
Three types of membrane proteins
Peripheral, integral, and transmembrane
Loosely connected membrane protein on cytoplasmic side
Peripheral
Embedded membrane protein that projects outward
Integral
Membrane protein that completely crosses from one side to another
Transmembrane
Lipids in eukaryotic membranes used for strength and stabilization
Sterols
Same as Sterols but in Bacteria
Hopanoids
If membrane is too cold
Solidification
If membrane is too hot
Thermal lysis
To correct fluidity if too cold
Increase unsaturated fatty acids, minimize van der waals forces
To correct fluidity if too hot
Increase saturated fatty acids, maximize van der waals forces
Transport that does not need ATP
Passive
Transport that requires ATP
Active
Transport that does not require a transport protein
Simple
Transport that requires a transport protein
Facilitated
Movement of water from high concentration to low concentration
Osmosis
3 factors that determine how a molecule moves across a membrane
Charge, shape, and size
Ligand binds specific protein receptors on the cell surface
Receptor-mediated transport system
Simultaneous transport and chemical modification of transported substance
Group translocation