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DP IB Biology: SL
Topic Questions
2.4 Enzymes
Question 4
Which statement below best describes the concept of enzyme-substrate specificity?
Enzymes and substrates fit together because they are the same type of biological molecule.
The enzyme's precise 3-D shape and chemical properties are compatible with the substrate allowing formation of enzyme-substrate complexes.
An enzyme can adapt its active site to fit a range of substrates to give maximum catalytic ability.
Projections on the enzyme's surface match projections on the substrate's surface.
Question 10
A student wished to use a starch solution of 0.01% for an enzyme experiment. A stock solution of 1.0% starch solution was provided.
Which of the following dilutions would be the best method to achieve the desired concentration with greatest precision, using standard laboratory equipment?
