BIOL 240 Final Exam || A+ GRADED.
Anabolism correct answers consumes energy, creation of products
Catabolism correct answers breaking things down, releases energy
obligate aerobes correct answers require oxygen to function
Microaerophiles correct answers grow best in low levels of oxygen
Aerotolerant aerobes correct answers not harmed by presence of oxygen, do not use
obligate anaerobes correct answers extremely sensitive to oxygen content
facultative anaerobes correct answers grow better with oxygen (use fermentation in the
absence of oxygen)
alkalophile correct answers optimal growth at a pH of 8.5-13.5
Acidophile correct answers optimal growth from pH 2.5-5.5
neutrophile correct answers optimal growth from pH 6-8.5
Psychrophiles correct answers -optimal growth from -15-10 degrees Celsius
-chemically modify membrane to have a higher proportion of unsaturated fatty acids
Hyperthermophiles correct answers -enzymes with features that provide thermal stability
-substitute key amino acids
-ionic bonds between acidic and basic residues
-di-inositol phosphate, diglycerol phosphate used to stabilize proteins
-bacteria fully saturate cytoplasmic membrane
-archaea create monolayers
Agar correct answers -polysaccharide derived from algae
-gels at 37 degrees Celsius
-not degraded by most microbes
Complex Media correct answers -component that is not chemically defined (ex. yeast,
peptone used to grow E. coli)
defined media correct answers -precise chemical composition known
selective media correct answers -allows for isolation of microbes with specific properties
differential media correct answers -visual change that allows certain microbes to be
recognized
enriched media correct answers -used to increase a population of microbes with a specific
property
Anabolism correct answers consumes energy, creation of products
Catabolism correct answers breaking things down, releases energy
obligate aerobes correct answers require oxygen to function
Microaerophiles correct answers grow best in low levels of oxygen
Aerotolerant aerobes correct answers not harmed by presence of oxygen, do not use
obligate anaerobes correct answers extremely sensitive to oxygen content
facultative anaerobes correct answers grow better with oxygen (use fermentation in the
absence of oxygen)
alkalophile correct answers optimal growth at a pH of 8.5-13.5
Acidophile correct answers optimal growth from pH 2.5-5.5
neutrophile correct answers optimal growth from pH 6-8.5
Psychrophiles correct answers -optimal growth from -15-10 degrees Celsius
-chemically modify membrane to have a higher proportion of unsaturated fatty acids
Hyperthermophiles correct answers -enzymes with features that provide thermal stability
-substitute key amino acids
-ionic bonds between acidic and basic residues
-di-inositol phosphate, diglycerol phosphate used to stabilize proteins
-bacteria fully saturate cytoplasmic membrane
-archaea create monolayers
Agar correct answers -polysaccharide derived from algae
-gels at 37 degrees Celsius
-not degraded by most microbes
Complex Media correct answers -component that is not chemically defined (ex. yeast,
peptone used to grow E. coli)
defined media correct answers -precise chemical composition known
selective media correct answers -allows for isolation of microbes with specific properties
differential media correct answers -visual change that allows certain microbes to be
recognized
enriched media correct answers -used to increase a population of microbes with a specific
property
