Practise IB Biology SL C1.1 by explaining enzyme specificity, metabolic reactions and rate evidence from temperature, pH and substrate experiments.
Define metabolism.
Identify the following processes as either anabolism or catabolism by placing a tick in the correct box.
The diagram shows some of the metabolic processes taking place in a plant cell.
With reference to the diagram, identify one example of catabolism.
The image represents the structure of the enzyme Rubisco from common pea (Pisum sativum).
State a role of the active site of an enzyme.
Outline one factor that could affect the activity of Rubisco.
Define metabolism.
The image represents the structure of the enzyme Rubisco from common pea (Pisum sativum).
State a role of the active site of an enzyme.
Outline the induced fit model for enzymes.
Which statement applies to enzymes?
Enzyme function depends on collisions between substrate and active sites.
One active site typically binds to a broad range of substrates.
The active site on the substrate is specific to one enzyme.
When enzymes are immobilized they stop working.
Some proteins in membranes act as enzymes. Outline enzyme-substrate specificity.
The image represents the structure of the enzyme Rubisco from common pea (Pisum sativum).
Outline one factor that could affect the activity of Rubisco.
The enzyme beta-galactosidase hydrolyses lactose to release glucose and fructose. A study was carried out to determine how acidity affects the activity of a beta-galactosidase enzyme, extracted from the fungus Penicillium simplicissimum.
Outline the measurements which would need to be taken to determine the activity of the beta-galactosidase at different pH values.
The graph shows energy changes during a reaction both with and without an enzyme present.
Which statement correctly identifies two of the regions labelled X, Y and Z in the graph?
X is the activation energy with an enzyme and Z is the net energy released from the reaction.
X is the energy released from the reaction and Y is the activation energy with an enzyme.
Y is the energy released with an enzyme and Z is the energy released when bonds are broken.
Y is the activation energy with an enzyme and Z is the net energy released.