Student Activity Kit, Distance Learning, Cellular Respiration-What Sugar Does Yeast Like Best

In this experiment, students will expose living yeast cells to three different sugars-glucose, sucrose, and lactose. The yeast cells should begin to utilize the sugars as a food source if they are capable of metabolizing them, and will begin to engage in aerobic respiration and/or fermentation. This activity allows students to understand that yeast may use different options for energy production, with varying degrees of effectiveness. A pH indicator will be used to indirectly determine the effectiveness of the three different sugars as a food source for the yeast. Kit contains an Instruction Manual and enough material for 2 groups of students.

Aligned to the Next Generation Science Standards (NGSS)

• Performance Expectations: HS-LS1-7, HS-LS2-3
• Cross Cutting Concepts: Energy and Matter
• Engineering Practices: Develop-ing and Using Models

Kit Contents:

• 10mL 0.5% Litmus
• 1g Dehydrated yeast
• 5mL 0.1M Sodium hydroxide
• 1 Glucose QuickSolution (to make 30mL)
• 1 Sucrose QuickSolution (to make 30mL)
• 1 Lactose QuickSolution (to make 30mL)
• 6 Plastic cups
• 2 Plastic scoops
• 2 Pipettes

DOT Info:
Non-regulated