What happens to an enzyme when it denatures?

• The activation energy of the reaction is doubled.

• The activation energy of the reaction is lowered.

• It's optimal conditions for temperature of the enzyme are doubled.

• The shape of the enzyme molecule is changed.

Most enzymes are composed of .....

• Lipids

• Carbohydrates

• Proteins

• Nucleic Acids

Tags

NGSS.HS-LS1-6

Enzymes in your body probably work best at which of the following temperatures>

• 25^oC

• 98^oC

• 37^oC

• 210^oC

One function of lipids is to store energy. What is another function of lipids in the human body?

• To form cell membranes

• To make energy from the sun.

• To control chemical reactions.

• To provide energy for the cell.

Organisms living in a bog environment must be able to tolerate nitrogen-poor acidic conditions. Bog plants such as the Venus flytrap and sundew are able to obtain their nitrogen by attacking and consuming insects. These plants produce chemicals that break down the insects into usable compounds.

These chemicals present in the bog plants that break down the insects mentioned in the reading passage are most likely...

• hormones

• lipids

• enzymes

• carbohydrates

Where do substrates bind on an enzyme?

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

What is the purpose  of an enzyme?

• give permission for the reaction
• raise activation energy
• speed up reactions
• control how many reactions occur

With what 3 letters do enzymes typically end?

• -ose
• -ase
• -ese
• -tic

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

Tags

NGSS.HS-PS1-5