1. You are given a culture of a purple-pigmented bacterium. You attempt to culture it under bright lights in a medium containing no reduced carbon source, and it fails to grow. You attempt to culture with glucose in the dark, and it still fails to grow. Last, you culture it with glucose in the light, and the culture grows. This bacterium is behaving as a:
A: Facultative Chemoheterotroph
B: Obligate Chemoheterotroph
C: Obligate Photoheterotroph
D: Facultative Photoautotroph
2. Organisms defined as autotrophs can:
A: Only use reduced carbon sources for biosynthesis
B: Only use the power of light to produce energy
C: Take CO2 and convert it to organic molecules for biosynthesis
D: Only survive if they are in an atmosphere devoid of oxygen
3. Organisms defined as heterotrophs can:
A: Use reduced carbon sources for biosynthesis
B: Only use the power of light to produce ATP
C: Take CO2 and convert it to organic molecules for biosynthesis
D: Only survive if they are in an atmosphere without oxygen
1. You are given a culture of a purple-pigmented bacterium. You attempt to culture it under bright lights in a medium containing no reduced carbon source, and it fails to grow. You attempt to culture with glucose in the dark, and it still fails to grow. Last, you culture it with glucose in the light, and the culture grows. This bacterium is behaving as a:
A: Facultative Chemoheterotroph
B: Obligate Chemoheterotroph
C: Obligate Photoheterotroph
D: Facultative Photoautotroph
2. Organisms defined as autotrophs can:
A: Only use reduced carbon sources for biosynthesis
B: Only use the power of light to produce energy
C: Take CO2 and convert it to organic molecules for biosynthesis
D: Only survive if they are in an atmosphere devoid of oxygen
3. Organisms defined as heterotrophs can:
A: Use reduced carbon sources for biosynthesis
B: Only use the power of light to produce ATP
C: Take CO2 and convert it to organic molecules for biosynthesis
D: Only survive if they are in an atmosphere without oxygen
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