PORTAGE LEARNING MICROBIO 171 BIOD PRACTICE EXAM 2026 QUESTIONS AND SOLUTIONS GRADED A+

PORTAGE LEARNING MICROBIO 171 BIOD
PRACTICE EXAM 2026 QUESTIONS AND
SOLUTIONS GRADED A+



◉ Columbia CNA Agar
Selective:
Differential:
Enriched:


Special cultures: Answer: Selective: Yes
Differential: Yes
Enriched: Yes


Special cultures: Gram-Positive Microbes


◉ Chocolate Agar
Selective:
Differential:
Enriched: Answer: Selective: No

, Differential: No
Enriched: Yes


◉ NUTRIENTS: Microbial Categories (Carbon and Energy):
1)
2)
3)
4). Answer: 1) Photoautotrophs- Light energy and CO2
2) Photoheterotrophs- Light energy and organic compounds
3) Chemoautotrophs- Chemical energy and CO2
4) Chemoheterotrophs- Chemical energy and organic compounds


◉ NUTRIENTS: Microbial Categories (Oxygen):
1)
2)
3). Answer: 1) Obligate Aerobes: Require O2
2) Obligate Anaerobes: Killed by O2
3) Facultative Anaerobes: Grow better with O2, but can live without it


◉ Other Nutrients (Not for Classification):
1)
2)