Question

u Beau Sopper flask with 100 mL of water and use the same syringe and stopper QUESTION 3 What was the independent variable for the virtual laboratory experiment? [2 pt] the amount of carbon dioxide produced the type of sugar used as the carbon source the amount of oxygen present for the reaction O the amount of sugar used as the carbon source QUESTION 4 What was the dependent variable for the virtual laboratory experiment? [2 pt)

Answer 1

The correct answer is 4th option, i.e. amount of sugar used as carbon source

Reason : The other three options are dependent variables. Amount of Carbon dioxide produced entirely depends upon the amount of sugar used. Amount of oxygen present for the reaction and the type of sugar used as carbon source are the control variables, since they are to be kept unchanged and constant during the reaction.

The amount of sugar used as carbon source is the factor governing the reaction, and the dependent variable (i.e. Amount of Carbon dioxide produced) varies when this independent variable is changed. Upon increasing the amount of sugar, the amount of carbon dioxide will also get increased due to higher availability of substrate for the reaction, and vice-versa. So obviously Amount of Sugar used as carbon source will be the independent variable.

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