What Is the Source of the Oxygen Used to Form

question 1

Multiple Choice

What is the source of the oxygen used to form water in the complete reactions of cellular respiration?

• A) carbon dioxide (CO₂)
• B) glucose (C₆H₁₂O₆)
• C) pyruvate (C₃H₃O₃-)
• D) molecular oxygen (O₂)

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Definitions:

Hypothesis

A proposed explanation made on the basis of limited evidence as a starting point for further investigation.

Human Development

The multidisciplinary study of how people change and how they remain the same over time.

Piaget

Jean Piaget was a Swiss psychologist known for his pioneering work in child development, particularly his theory of cognitive development that describes how children construct a mental model of the world.

Cross-Sectional Research

A type of observational study that analyzes data from a population, or a representative subset, at a specific point in time.