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MCB 2610 Exam 2 Question and answers verified to pass 2024/2025
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MCB 2610 Exam 2 Question and answers verified to pass 2024/2025 MCB 2610 Exam 2 Macronutrients - correct answer carbon, nitrogen, phosphorus, sulfur, oxygen, hydrogen, potassium, sodium, magnesium, calcium, and iron Micronutrients - correct answer manganese, zinc, cobalt, molybdenum, n...

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  • October 17, 2024
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  • 2024/2025
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MCB 2610 Exam 2
Macronutrients - correct answer ✔carbon, nitrogen, phosphorus, sulfur,
oxygen, hydrogen, potassium, sodium, magnesium, calcium, and iron


Micronutrients - correct answer ✔manganese, zinc, cobalt, molybdenum,
nickel, copper


All organisms require - correct answer ✔Carbon, Hydrogen, Oxygen, and
electrons


Autotrophs - correct answer ✔Assimilate carbon from inorganic sources


Heterotrophs - correct answer ✔Assimilate carbon in preexisting organic
form


Phototrophs - correct answer ✔Capture light energy to produce ATP


Chemotrophs - correct answer ✔Capture energy from oxidation of reduced
organic or inorganic compounds


Organotrophs - correct answer ✔Acquire their electrons from organic
molecules


Lithotrophs - correct answer ✔Acquire their electrons from inorganic sources


Mixotrophs - correct answer ✔Some organisms have great metabolic
flexibility and alter their metabolism in response to environmental changes

,Nitrogen - correct answer ✔amino acids, purines, pyrimidines, some
carbohydrates, lipids, enzyme cofactors
- metabolism of amino acids, nitrates, ammonia
- nitrogen fixation


Phosphorus - correct answer ✔nucleic acids, phospholipids, coenzymes,
some proteins
- inorganic phosphate
- organic molecules containing a phosphoric group


Sulfur - correct answer ✔amino acids, coenzymes
- amino acids cysteine and methonine
- sulfate (assimilatory sulfate reduction)


Growth factors - correct answer ✔organic compounds that cannot be
synthesized by an organism but are essential for growth
- amino acids
- purines/pyrmidines
- vitamins


Nutrient Concentration - correct answer ✔Growth rate depends on amount of
nutrients in the environment


Aerobes - correct answer ✔Grow in the presence of oxygen


Obligate aerobes - correct answer ✔Require oxygen

, Microaerophiles - correct answer ✔Grow best when there is less oxygen
than normal


Anaerobic - correct answer ✔Growth occurs without oxygen


Aerotolerant anaerobes - correct answer ✔Aren't harmed by oxygen, but
don't use it either.


Obligate anaerobes - correct answer ✔Cannot grow when oxygen is present


Facultative anaerobes - correct answer ✔Can use oxygen but can also grow
in the absence of oxygen


Reactive Oxygen Species - correct answer ✔Reduced from oxygen


Strict anaerobic microbes - correct answer ✔Lack superoxide dismutase and
catalase (protective enzymes)


Anaerobic workstation - correct answer ✔Incubator, work gloves, airlock


GasPak Anaerobic system - correct answer ✔Lid, lockscrew, clamp, catalyst
chamber, gas generator envelope, rubber gasket seal, anaerobic indicator
strip


pH - correct answer ✔Microbes have an optimal rage for growth
(acidophiles, neutrophiles, alkalophiles)

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