chapter 7 quiz 2 22-42

when atoms or molecules move in gradient from area of higher density or concentration to are of lower density or concentraction

• evenly distrubutes
• duffusion of molecules depend majorly on concentration gradient

movement of molecules from an area of higher concentraction and requires carrier protien

transports against the diffusion concentratraction gradient or in same direction

requires specific membrane proteins

• form of active transport include
• phagocytosis- cell eating
• pinocytosis-cell drinking

microragnisms that has an optimum temp of below 15 and capable of growth at 0 degrees

grows slowly in cold optimum temp of 20 degrees

• grows in intermediate temps
• optimum temp -

• range-45-80 degrees
• optimum 45

hyperthermophiles range 80-120 degrees

can use gaseous oxygen

can not grow with out oxygen

prefers oxygen but can grow with out it

requires a small amount of oxygen

lacks the enzyme to use oxygen

will die if exsposed to oxygen

DOES not use oxygen but can grow around it

• requireded by all microbes
• capnophiles grow in high co2 enviroments

ph6-8

requires high acidity

lives in habitats with high solute concentration

prefer high salt concentraction