ET Effect Of Substrate & Enzyme Conc 11/14/24

The graph shows how enzymes affect reactions in cells. Which statement best summarizes the information shown in the graph?

• Enzymes increase the energy of the reactants.
• Enzymes decrease the energy level of the products.
• Enzyme decrease the activation energy of the reaction.
• Enzymes reverse the direction of the reaction.

Tags

NGSS.HS-PS1-4

How does an enzymes shape relate to its function?

• the shape of the enzyme has no relation to its function

• the enzyme is shaped specially for certain substrates to perform a specific reaction

• the enzyme shape acts as a receptor to certain products

• the enzyme shape can fit into specific substrates to cease a reaction

For the enzyme-catalyzed reaction shown in Figure 6.2, which of these treatments will cause the greatest increase in the rate of the reaction, if the initial reactant concentration is 1.0 micromolar?

• doubling the activation energy needed

• cooling the reaction by 10°C

• doubling the concentration of the reactants to 2.0 micromolar

• doubling the enzyme concentration

Tags

NGSS.HS-PS1-5

In Figure 6.2, why does the reaction rate plateau at higher reactant concentrations?

• Feedback inhibition by product occurs at high reactant concentrations.

• Most enzyme molecules are occupied by substrate at high reactant concentrations.

• The reaction nears equilibrium at high reactant concentrations.

• The activation energy for the reaction increases with reactant concentration.

Tags

NGSS.HS-PS1-2

What would happen to the reaction rate if substrate concentration was increased

• the reaction rate would increase

• the reaction rate would decrease

• the reaction rate would be unaffected

• the reaction would cease to occur

Tags

NGSS.HS-PS1-5

If the enzyme concentration were decreased, the reaction rate would ________________

• increase

• decrease

• not be affected