BIOL 2051 Exam UPDATED ACTUAL QUESTIONS AND CORRECT ANSWERS

BIOL 2051 Exam UPDATED ACTUAL
QUESTIONS AND CORRECT ANSWERS
Distinguish between macronutrients and micronutrients. - CORRECT ANSWER macro-
elements needed in large amounts

micro-elements needed in small amounts



List all 10 macronutrients - CORRECT ANSWER carbon

hydrogen

oxygen

nitrogen

potassium

calcium

magnesium

phosphorous

sulfur

sodium



Give some examples of micronutrients - CORRECT ANSWER boron, iron, and cobalt



How do growth factors differ from macronutrients and micronutrients? - CORRECT
ANSWER growth factors are organic micronutrients that mainly includes vitamins



Name the 5 groups describing an organism's relationship to oxygen. - CORRECT
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? - CORRECT
ANSWER thioglycolate broth; oxic and anoxic zones



Where would an obligate aerobe grow in a thioglycolate tube? - CORRECT ANSWER oxic
zone



Where would an obligate anaerobe grow in a thioglycolate tube? - CORRECT
ANSWER anoxic zone



Where would an facultative aerobe grow in a thioglycolate tube? - CORRECT ANSWER both
zones, but more in oxic



Where would a microaerophile grow in a thioglycolate tube? - CORRECT ANSWER top of
broth



Where would an aerotolerant anaerobe grow in a thioglycolate tube? - CORRECT
ANSWER anywhere in broth; they're insensitive to oxygen



What accommodations need to be made to grow an aerobe in the lab? - CORRECT ANSWER -
oxic

-exposure to air

-vigorous shaking

-bubble in sterile air



What accommodations need to be made to grow an anaerobe in the lab? - CORRECT
ANSWER -anoxic jar

-sealed tube

-anoxic glove boxes

-reducing agent



During what process are toxic oxygen molecules generated? - CORRECT ANSWER respiration