Energy, Enzymes, and Photosynthesis
Worksheet
Name _______________________
Date _______________ Per ____
Read your textbook for information and then answer the following questions using
complete sentences. All answers must be in your own words.
Some Basic Energy Concepts: read pages 73-77
1. kinetic energy:
2. potential energy:
3. Explain the difference between ATP and ADP.
4. Explain how the ATP cycle works and explain why ATP is a renewable resource.
5. What is energy coupling?
Additional Information:
Chemical reactions either store or release energy
– Endergonic reactions—absorb and store energy in a reaction
– Exergonic reactions—energy is released from reaction
Redox Reactions: read pages 92-93 and 106
6. What is an oxidation-reduction reaction?
7. What happens when a substance is oxidized?
8. What happens when a substance is reduced?
9. Write the balanced equation for photosynthesis.
10. Which reactant is being oxidized?
11. Which reactant is being reduced?
Proteins: read pages 46-48
12. What are the monomers (building blocks) that make up proteins? ___________________
13. Draw the basic structure of an amino acid and label the major functional groups.
14. The covalent bond formed between a nitrogen atom and a carbon atom is called a
________________________.
15. Identify each of the levels of protein structure in the diagrams. Include a description
of each structure mentioning what type of bond(s) is/are responsible for each.
a. ____________________________
____________________________
b._____________________
____________________
____________________
c.____________________________
___________________________
___________________________
d._________________________
________________________
________________________
_________
16. How does a protein’s shape relate to its function?
Enzymes: read pages 78-79
17. Enzymes are proteins that act as ____________________, to speed up chemical
reactions.
18. substrate:
19. active site of an enzyme:
20. How does an enzyme speed up a chemical reaction?
21. Activation energy (EA):
22. The diagram to the right is an energy profile of what
type of reaction (i.e. endergonic or exergonic)?
_______________________
How do you know? Explain.
23. Diagram and discuss the “induced-fit” model scientists use to explain how enzymes might
work.