- Yeast respiration comparison: Glucose vs. Maltose, Saccharomyces cerevisiae, fermentation processes. - Independent variable: Type of sugar (glucose, maltose); dependent variable: Rate of gas production. - Importance of stirring yeast suspension: Homogeneity, consistent distribution of yeast cells. - Methodology for testing hypothesis: Yeast culture preparation, sugar addition, gas collection measurement. - Data analysis: Rate of respiration calculation, volume of gas produced over time, graphical representation. - pH measurement techniques: pH meter advantages over indicator solutions, accuracy, precision, real-time monitoring.