AP Enzymes

Some bacteria are metabolically active in hot springs because ____________

• their enzymes are insensitive to temperature
• they use molecules other than proteins as their main catalysts
• their enzymes have high optimal temperatures
• they are able to maintain an internal temperature much cooler than that of the surrounding water

Which of these is NOT true?

• Enzymes can denature (change shape) when the temperature gets too high.
• Enzymes can only be used once in a chemical reaction. 
• Extreme pH can denature enzymes.
• Enzymes speed up chemical reactions. 

Tags

NGSS.HS-LS1-7

NGSS.HS-PS1-5

At high temperatures enzyme activity declines because of:

• Denaturation
• Decreased Kinetic Motion
• Increased H-Bonding
• Dissociation of Ionic Compounds

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.

The part of the enzyme that the substrate bonds to is called the _____.

• active site
• activation energy
• bond site
• peptide bond

Which of these is most likely an enzyme?  

• Sucrose
• Galactose
• Fructose
• Amylase

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

• 15^oC
• 40^oC
• 30^oC
• 35^oC

The energy needed to start a reaction

• activation energy
• adhesion energy
• chemical energy
• cohesion energy

A --> B + C

• Anabolic

• Catabolic

Tags

NGSS.HS-LS1-7

A + B --> C

• Anabolic

• Catabolic