3.06 The Cell: Quest for Energy

Time to Reflect

Energy is an important resource for life. Cells must have a way to obtain it and control the use of energy. Photosynthesis and cellular respiration are two reactions that allow living things to transfer the energy from the sun and convert it into a usable form that cells can use. Photosynthesis converts the energy from the sun into food energy and cellular respiration releases the energy in the food for cell use. Only plant cells carry out photosynthesis. The cells of other organisms must get energy from the foods the organism eats.

• Photosynthesis uses carbon dioxide gas, water, and sunlight to make starches and sugars (stored in the plant cells) and oxygen gas.
• Cellular respiration uses starches and sugars and oxygen to make cellular energy, water, and carbon dioxide gas.

Activity

Venn Diagrams are visual tools used to illustrate how two things are alike and how they are different. In this activity you will complete a Venn Diagram to compare and contrast photosynthesis and cellular respiration. Open the Venn Diagram link below to get started.

Photosynthesis Cellular Respiration Venn Diagram

Review the grading rubric in the green activity box at the end of the page to see how you will be graded.

Tour Debrief

To complete this activity make sure that you have:

• added the new terms and their meanings to your Module 3 glossary page
• completed the activities on photosynthesis and cellular respiration and added the "boxed" information to your notebook
• completed the self quiz at the end of the activity
• Completed the Venn Diagram