BIOS242 EXAM 2 150 QUESTIONS
ALL CORRECT
what is the temperature range for the optimal rate of growth for a psychrophile?
0-15 degrees Celsius
what is the temperature range for the optimal rate of growth for a mesophile?
20-40 degrees Celsius
what is the temperature range for the optimal rate of growth for a thermophile?
45-80 degrees Celsius
what does a barophile require for growth?
high hydrostatic pressure
what is a heterotroph?
organism that must obtain its carbon in organic form
what is an autotroph?
an organism that uses inorganic CO2 as its carbon source
what is a phototroph?
,microbes that photosynthesize
what is a chemotroph?
microbes that gain energy from chemical compounds
what is an example of a barophile?
deep sea microbes live in 1000x atmospheric pressure
what does a halophile require for growth?
high concentration of salt (9-25% NaCl)
what are enzymes?
biological catalysts that increase the rate of a chemical reaction
___ ___ is needed for a reaction to occur
activation energy
true or false: enzymes lower the activation energy
true
, enzymes act on reactant molecules known as ___
substrates
enzymes bind and chemically change substrates into ___
products
what is an apoenzyme?
protein, composed of a sequence of amino acids
what is required for a holoenzyme?
cofactors and coenzyme
cofactors are ___ elements
inorganic
coenzymes are ___ elements
organic
what are cofactos?
metal ions that activate enzymes
ALL CORRECT
what is the temperature range for the optimal rate of growth for a psychrophile?
0-15 degrees Celsius
what is the temperature range for the optimal rate of growth for a mesophile?
20-40 degrees Celsius
what is the temperature range for the optimal rate of growth for a thermophile?
45-80 degrees Celsius
what does a barophile require for growth?
high hydrostatic pressure
what is a heterotroph?
organism that must obtain its carbon in organic form
what is an autotroph?
an organism that uses inorganic CO2 as its carbon source
what is a phototroph?
,microbes that photosynthesize
what is a chemotroph?
microbes that gain energy from chemical compounds
what is an example of a barophile?
deep sea microbes live in 1000x atmospheric pressure
what does a halophile require for growth?
high concentration of salt (9-25% NaCl)
what are enzymes?
biological catalysts that increase the rate of a chemical reaction
___ ___ is needed for a reaction to occur
activation energy
true or false: enzymes lower the activation energy
true
, enzymes act on reactant molecules known as ___
substrates
enzymes bind and chemically change substrates into ___
products
what is an apoenzyme?
protein, composed of a sequence of amino acids
what is required for a holoenzyme?
cofactors and coenzyme
cofactors are ___ elements
inorganic
coenzymes are ___ elements
organic
what are cofactos?
metal ions that activate enzymes
