BIOD 171 Module 4 Exam UPDATED Questions and CORRECT Answers

BIOD 171 Module 4 Exam UPDATED
Questions and CORRECT Answers
necessary for growth and survival - CORRECT ANSWER✔✔- nutrients, temp, pH



CO2 and Light - CORRECT ANSWER✔✔- photoautotroph



CO2 and Chemicals - CORRECT ANSWER✔✔- chemoautotroph



Organic Compounds and Light - CORRECT ANSWER✔✔- photoheterotroph



Organic Compounds and Chemicals - CORRECT ANSWER✔✔- chemoheterotroph



obligate aerobes - CORRECT ANSWER✔✔- require O2
settle at the top of test tube


Obligate anaerobes - CORRECT ANSWER✔✔- killed by O2
settle at the bottom of test tube


faculative anaerobes - CORRECT ANSWER✔✔- grows better with O2 but can live without
O2
more concentrated at the top of test tube


nirtogen is a... - CORRECT ANSWER✔✔- growth-inhibiting nutrient



trace elements - CORRECT ANSWER✔✔- need in minuscule amounts to support
metabolism


growth factors - CORRECT ANSWER✔✔- organic chemicals needed in small quantities to
support metabolism

, ex: AA, cholesterol, heme, NADH


thermophile - CORRECT ANSWER✔✔- HOT
>45 C


mesophile - CORRECT ANSWER✔✔- medium
20-40 C
cause most human diseases and infections bc body temp is 37 C


psychophile - CORRECT ANSWER✔✔- cold!!
<15 C
can survive refrigeration and spoil food


more H+ = more ___ - CORRECT ANSWER✔✔- acidic



acidophile - CORRECT ANSWER✔✔- 0-6 pH



neutrophile - CORRECT ANSWER✔✔- 6.5-7.5 pH



alkalinophile - CORRECT ANSWER✔✔- 7-11.5 pH



inoculum - CORRECT ANSWER✔✔- sample of the microbe



medium - CORRECT ANSWER✔✔- liquid or solid



culture - CORRECT ANSWER✔✔- microbes grown in the media or the process



colonies - CORRECT ANSWER✔✔- cluster of cells arising from 1 parent cell