Featured in PASCO’s College Biology Instructor Guide
College Instructor edition with 26 experiments covering introductory and general biology topics.
Use a PASCO quad temperature sensor and ice bath to explore the relationship between the inner volume of a citrus fruit and its outer surface area.
In this activity, students investigate how a cell’s surface area to volume ratio affects the way the cell responds to the environment. To learn this, students:
In this lab, students will gain experience in the following procedures:
Citrus fruits, varying type and size - 2
Dissecting probe or pin
Ice and water - 2 to 3 liters
Petroleum jelly - 1 g
Polystyrene cooler, plastic bucket or other
vessel for ice bath
Twine or string - 20 to 30 cm
This experiment may require software and an interface for data collection.