Enzymes

Venus flytraps produce chemicals that break down insects into usable compounds. These chemicals are most likely:

• Hormones
• Lipids
• Enzymes
• Carbohydrates

How do enzymes affect chemical reactions?

• Increased activation energy
• Decreased activation energy
• Increased energy change
• Decreased energy change

What is a valid conclusion based on the graph?

• Temperature influences an enzyme's activity rate.
• The maximum rate of human respiration occurs at about 57°C.
• Growth can be controlled by enzyme action.
• The maximum rate of human digestion occurs at about 45°C.

Why is maintenance of a constant blood pH critical for body processes?

• Blood with a high pH helps prevent cancer.
• Enzymes work best within a narrow pH range.
• The production of vitamin C by skin cells requires low pH values.
• Some bacteria thrive in very acidic conditions.

Tags

NGSS.HS-LS1-3

Which suggests that the shape of an enzyme determines the enzyme's function?

• Enzymes are specific to a substrate
• Enzymes can operate in a wide range of conditions
• Enzymes are activated by neighboring molecules
• Enzymes can be found in all life-forms

Where do substrates bind on an enzyme?

• voltage-gated channels
• surface receptor
• calcium channels
• active site

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 5.0
  
• Activity increases from pH 6.6 to 9.0
• The enzyme denatures at pH 6.6
  

The "lock and key hypothesis" attempts to explain the mechanism of?

• Vacuole formation
• Pinocytosis
• Sharing of electrons
• Enzyme specificity 

Which chemical is classified as an enzyme?

• Galactose
• Lipid
• Protease
• Manganese dioxide

Tags

NGSS.MS-LS1-7

What is being represented by the letter A in the image?

• Substrate
• Enzyme
• Product
• Complex

Tags

NGSS.MS-LS1-7