BIOL 2051 EXAM 3 (BRININSTOOL) 124 QUESTIONS
WITH COMPLETE SOLUTIONS.
Distinguish between macronutrients and micronutrients. Answer - macro-
elements needed in large amounts
micro-elements needed in small amounts
List all 10 macronutrients Answer - carbon
hydrogen
oxygen
nitrogen
potassium
calcium
magnesium
phosphorous
sulfur
sodium
Give some examples of micronutrients Answer - boron, iron, and cobalt
How do growth factors differ from macronutrients and micronutrients?
Answer - growth factors are organic micronutrients that mainly includes
vitamins
, Name the 5 groups describing an organism's relationship to oxygen. Answer -
obligate aerobes
facultative aerobes
microaerophiles
obligate anaerobes
aerotolerant anaerobes
What type of broth can be used to determine an organism's oxygen
requirement? What does this broth contain that makes it possible to determine
an organism's oxygen requirement? Answer - thioglycolate broth; oxic and
anoxic zones
Where would an obligate aerobe grow in a thioglycolate tube? Answer - oxic
zone
Where would an obligate anaerobe grow in a thioglycolate tube? Answer -
anoxic zone
Where would an facultative aerobe grow in a thioglycolate tube? Answer -
both zones, but more in oxic
Where would a microaerophile grow in a thioglycolate tube? Answer - top of
broth
Where would an aerotolerant anaerobe grow in a thioglycolate tube? Answer -
anywhere in broth; they're insensitive to oxygen
What accommodations need to be made to grow an aerobe in the lab? Answer
- -oxic
WITH COMPLETE SOLUTIONS.
Distinguish between macronutrients and micronutrients. Answer - macro-
elements needed in large amounts
micro-elements needed in small amounts
List all 10 macronutrients Answer - carbon
hydrogen
oxygen
nitrogen
potassium
calcium
magnesium
phosphorous
sulfur
sodium
Give some examples of micronutrients Answer - boron, iron, and cobalt
How do growth factors differ from macronutrients and micronutrients?
Answer - growth factors are organic micronutrients that mainly includes
vitamins
, Name the 5 groups describing an organism's relationship to oxygen. Answer -
obligate aerobes
facultative aerobes
microaerophiles
obligate anaerobes
aerotolerant anaerobes
What type of broth can be used to determine an organism's oxygen
requirement? What does this broth contain that makes it possible to determine
an organism's oxygen requirement? Answer - thioglycolate broth; oxic and
anoxic zones
Where would an obligate aerobe grow in a thioglycolate tube? Answer - oxic
zone
Where would an obligate anaerobe grow in a thioglycolate tube? Answer -
anoxic zone
Where would an facultative aerobe grow in a thioglycolate tube? Answer -
both zones, but more in oxic
Where would a microaerophile grow in a thioglycolate tube? Answer - top of
broth
Where would an aerotolerant anaerobe grow in a thioglycolate tube? Answer -
anywhere in broth; they're insensitive to oxygen
What accommodations need to be made to grow an aerobe in the lab? Answer
- -oxic
