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

At high temperatures enzyme activity declines because of:

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

Tags

NGSS.HS-PS1-5

Most enzymes have the ending:

• -ase
• -ose
• -ic acid
• -ate

When a molecule can occupy the same active site as the substrate, a situation called __________________ can result

• Competitive lnhibition
• Allosteric Regulation
• Non-Competitive Inhibition
• Feedback Inhibition

Letter D...

• active site
• enzyme
• substrate
• products

Tags

NGSS.MS-LS1-7

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

In order to increase the rate of reaction using an enzyme a scientist could.... (Choose all that apply)

• Increase the amount of substrate

• Decrease the temperature

• Increase the temperartue

• Introduce a competitive inhibitor

Tags

NGSS.HS-PS1-5

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