The enzyme lactase converts the disaccharide lactose into the monosaccharides gl
ID: 78714 • Letter: T
Question
The enzyme lactase converts the disaccharide lactose into the monosaccharides glucose and galactose.
To test its activity a researcher puts 1ml of 1mg/ml lactase into a 5ml volume of 1mg/ml lactose and measures the amount of glucose at the end of a five minute time period. During the experiment the temperature is set to 37C. He repeats the experiment at pH 6, 7 and 8 and then creates a graph of the data.
In the following experiment indicate whether each of the following is a dependent, independent (experimental), or controlled variable (if it is none of these select that instead).
glucose concentration
[ Choose ] independent controlled dependent none of these
lactase concentration
[ Choose ] independent controlled dependent none of these
oxygen in ml
[ Choose ] independent controlled dependent none of these
temperature
[ Choose ] independent controlled dependent none of these
pH
Explanation / Answer
The Influence of the rate of reaction on formation of glucose from lactose by lactase enzyme
glucose concentration :
[ Choose ] independent controlled dependent none of these
lactase concentration
[ Choose ] independent controlled dependent none of these
oxygen in ml
[ Choose ] independent controlled dependent none of these
temperature
[ Choose ] independent controlled dependent none of these
pH
[ Choose ] independent controlled dependent none of these
Ans given in BOLD letters for each cases.
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