9/8 Intro to Enzymes 25-26

Hotspot

Select the Letter that represents the enzyme-substrate complex

Multiple Choice

What is a substance called if it speeds up a chemical reaction?

• reusable
• catalyst
• specific
• fragile

Multiple Choice

Enzymes are an example of

• Lipids

• Carbohydrate

• Protein

• Nucleic Acid

Hotspot

Select the Letter that represents the products

Hotspot

Select the Letter that represents the substrate

Multiple Choice

An enzyme speeds up a reaction by

• lowering the activation energy.
• raising the activation energy.
• releasing energy.
• absorbing energy.

Multiple Choice

Which of the following conclusions can be drawn from this graph?

• The optimum pH of the enzyme is 6.6.
  
• The optimum pH of the enzyme is 5.8
  
• The enzyme’s activity increases as pH increases 5.0 to 9.0
  
• The enzyme’s activity is greater around pH of 8.0 .
  

Multiple Choice

What is the function of an enzyme?

• enzymes break themselves into small pieces
• enzymes slow down chemical reactions
• enzymes speed up chemical reactions
• enzymes combine products to form reactants 

Multiple Choice

True or false: Denature means to fall apart or change shape due to their environment.

• True

• False

Multiple Choice

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.

Multiple Select

What does it mean by enzyme specificity?

• Only specific substrates can fit into an enzyme

• Only inhibitors can fit into the enzyme

• Substrates do not need to be specific

• The pH level is level

Multiple Choice

Which enzyme thrives in the higher pH level?

• A
• B

Hotspot

Select the Letter that represents the enzyme.

Multiple Select

What would cause an enzyme to denature? Select all that apply

• Temperature

• pH

• Time

• Levels

Multiple Choice

Which substrate would fit this enzyme?

• Δ
• σ
• ∅
• μ

Multiple Choice

What factors affect an enzyme's reaction rate?

• temperature 
• pH
• all of these

Hotspot

Select the Letter that represents the active site?