Description
Explore the processes of photosynthesis and cellular respiration and their interrelationship using algae beads. In the Guided Activity, groups of students collaborate to perform an investigation in which they manipulate the transmittance of specific wavelengths of light available to encapsulated algae cells, or “algae beads.” Changes observed within a solution containing algae beads and a colorimetric indicator allow students to indirectly determine the net result of the biochemical processes of algal photosynthesis and cellular respiration within a closed system. In the Inquiry Activity, students formulate and explore an experimental question pertaining to the relative rate of photosynthesis and respiration in algae beads. Kit includes enough materials for 8 groups. Note: Kit includes a voucher to request perishable material later at your convenience. Contact us or return the voucher to request delivery of perishable material.
Time Requirement
60 minutes of preparation before both the Pre-Lab and Guided Investigation. The Pre-Lab takes approximately 45 minutes, while the Guided Investigation takes approximately 60 minutes. The time required for the Inquiry Investigation will vary based on students’ plans.
Digital Resources
Includes 1-year access to digital resources that support instruction. Digital resources may include a teacher manual and student guide, pre-lab activities and setup videos, simulations, and post-lab analysis and assessments.
Prerequisite Knowledge and Skills
Students should be familiar with the basic processes and requirements of photosynthesis and cellular respiration, and have a basic understanding of the role of plant pigments in the process of photosynthesis, pH, and using the slope of graphed data to calculate rate of reaction.
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