11 Biology - Enzymes

What are the four biological molecules?

• proteins, carbohydrates, lipids, nucleic acids
• A, T, C, G
• water, air, earth, and fire
• Babbidge, Campbell, Grimberg

What is the purpose of an enzyme?

• give permission for the reaction

• raise activation energy

• speed up reactions (catalyst)

• control how many reactions occur

Letter D in the picture is...

• active site
• enzyme
• substrate
• products

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

• Substrate
• Enzyme
• Product
• Complex

Which biomolecule is also known as enzymes?

• Carbohydrate
• Lipid
• Nucleic Acid
• Protein

Letter C, where the reaction take place is called the

• active site

• enzyme

• substrate

• products

Enzymes catalyze reactions by ___________ Activation Energy.

• Increasing
• Decreasing

Most enzymes have the ending:

• -ase
• -ose
• -ic acid
• -ate

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. 

Based on the graph, what temperature does this enzyme work best? 

• 15 C
• 40 C
• 30 C
• 47 C