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WorksheetsENZYMES AND OTHER HORRIBLE THINGS
Total questions: 10
Worksheet time: 6mins
1 and 2
1 and 3
1 only
2 and 3
Choose the true statements
X is the catalysed reaction
Y is the catalysed reaction
Z is the energy gained by the product
X is the uncatalysed reaction
Z is the total energy change in the reaction
Which statements about the effects of ALL inhibitors are correct?
1. alter the shape of the active site
2. denature the enzyme
3. reduce the rate of the enzyme catalysed reaction
1,2 and 3
1 and 2 only
1 and 3 only
3 only
Most enzyme molecules will have free active sites
The number of available substrate molecules is high
The number of enzyme-substrate complexes is low
The rate remains the same if more enzyme is added
How is the Michaelis constant (Km) used?
to compare the affinities of enzymes for their substrates
to find the maximum velocity of an enzyme (Vmax)
to find the rate at which substrate is convertd by an enzyme
1 and 2
1 and 3
2 and 3
1 only
In an experiment, 5 ml of salivary amylase are added to 100 ml of different concentrations of starch.
Which graph shows the results of plotting the initial rate of reaction against the concentration of substrate ?
Choose the true statements
The ? shows the induced site
The inhibition is non-competitive
The enzyme becomes denatured
The ? shows the allosteric site
The inhibition is competitive
The picture shows:
solvation
diffusion
cohesion
adhesion
mass flow
Choose which properties of water are affected by the presence of hydrogen bonds
High adhesion
Good solvent
Latent heat of evaporation
Specific heat capacity
Maximum density at 4°C
