Lean, Mean Information Machine: Using a Simple Model to Learn about Chromosomal DNA

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Learners observe a model of a cell and its chromosomal DNA made from a plastic egg and dental floss. Use this model to illustrate how much DNA is held in one cell. For comparison, multiple eggs can be prepared representing different species and their DNA. Introduce the demonstration by talking about the actual size of cells and DNA. Activity contains extension questions to assess learners' understanding.

Quick Guide

Preparation Time:
5 to 10 minutes
Learning Time:
1 to 2 hours
Estimated Materials Cost:
1 cent - $1 per group of students
Age Range:
Ages 8 - 18
Resource Types:
Activity, Demonstration, Lesson/Lesson Plan, Model
Language:
English

Materials List (per group of students)

Keywords

Subjects

  • Life Sciences
    • Cells
      • Cell Structure and Function
    • Heredity and Genetics
      • DNA Structure and Function
  • Physical Sciences
    • Chemistry
      • Chemistry of Life
  • Mathematics
    • Measurement
      • Units of Measurement
      • Size and Scale

Informal Categories

  • Model Building

Audience

To use this activity, learners need to:

  • see

Learning styles supported:

  • Involves hands-on or lab activities

Other

Components that are part of this resource:

Includes alignment to state and/or national standards:

Includes assesments for student learning:

Access Rights:

  • Free access

By:

  • American Society for Microbiology; Gallo, Ph.D., Mark ; Wessner, Ph.D., David R.

Rights:

  • All rights reserved, American Society for Microbiology, 2012