The citric acid cycle has a unique circular appearance when written due to the regeneration of oxaloacetate. Which of the following molecules is oxaloacetate? 
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A reason or motivation for an action or event.
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To experience or be subjected to something bad or unpleasant.
Cultural Differences
The variations in the ways of life, beliefs, norms, and behaviors among different groups of people or societies.
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Likely to be influenced or harmed by a particular thing or condition.
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