Optimal Conditions Graph

Most enzymes are composed of .....

• Lipids

• Carbohydrates

• Proteins

• Nucleic Acids

Tags

NGSS.HS-LS1-1

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 .
  

Based on the graph, what is the optimal temperature for this enzyme? 

• 15^oC
• 40^oC
• 30^oC
• 35^oC

Letter D...

• active site
• enzyme
• substrate
• products

In an experiment to investigate the effect of temperature on the activity of a digestive enzyme X, the time taken for the digestion of a fixed amount of substrate by this enzyme was recorded. Which of the following graphs shows the most likely results of the experiment?

• A

• B

• C

• D

The graphs show the reaction rate for an enzyme across a range of temperatures and pH.

Based on these data, this enzyme functions best as what temperature and pH?

• Temperature of 27oC and a pH of 4

• Temperature of 37oC and a pH of 6

• Temperature of 40oC and a pH of 8

• Temperature of 50oC and a pH of 10

A student measured the time required for a protein sample to be completely digested in the presence of an enzyme under different pH levels. At which pH is the enzyme most active?

• 7.1

• 6.9

• 6.8

• 7.2

Based on the graph above, at what temperature range is enzyme activity at its greatest?

• 15-25 ºC

• 25-35 ºC

• 35-45 ºC

• 45-55 ºC

A student measured the time required for a protein sample to be completely digested in the presence of an enzyme under different pH levels. At which pH is the enzyme least active?

• 7.1

• 6.9

• 6.8

• 7.2

Which is the MOST valid conclusion based on this graph?

• Enzymes are not affected greatly by temperature.

• Enzymes work most effectively at low temperatures.

• Raising the temperature always makes an enzyme work better.

• Enzyme function decreases after a certain favorable temperature.