Multiple Choice
In the context of photosynthesis, which molecule transfers electrons generated during the light reactions to CO2 during the Calvin cycle?
1. A Review of General Chemistry
Intro to Organic Chemistry
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Which type of organism is the source of the enzyme Taq polymerase?
A
Thermophilic bacterium
B
Halophilic bacterium
C
Mesophilic bacterium
D
Psychrophilic bacterium
Verified step by step guidance1
Understand the role of Taq polymerase: Taq polymerase is an enzyme used in the polymerase chain reaction (PCR) to amplify DNA sequences. It is known for its ability to withstand high temperatures.
Identify the characteristics of thermophilic organisms: Thermophilic organisms thrive at relatively high temperatures, typically between 41 and 122 degrees Celsius. Enzymes from these organisms are stable and active at high temperatures.
Consider the environment where Taq polymerase is used: PCR involves repeated heating cycles, which require an enzyme that can function at high temperatures without denaturing.
Match the enzyme's properties with the organism type: Since Taq polymerase is heat-stable and used in high-temperature processes, it is likely sourced from a thermophilic organism.
Conclude the source of Taq polymerase: Based on its heat stability and the characteristics of thermophilic organisms, Taq polymerase is derived from a thermophilic bacterium.
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