Question

Think about the lab procedure you just read. Label each factor below V if it was variable during the procedure or C if it was constant.

molecule size (large starch molecules vs. small glucose molecules)

material used as the membrane

amount of substances used

number of trials

whether the molecules diffused through the membrane (tubing)

Answer 1

molecule size (large starch vs. small glucose) — V (variable)

material used as the membrane — C (constant)

amount of substances used — C (constant)

number of trials — C (constant)

whether the molecules diffused through the membrane (tubing) — V (variable; the measured outcome)