Curriculum, Graphic Organizer/Worksheet, Other


Living organisms constantly receive and interpret signals from their environment. Signals can come in the form of light, heat, water, odors, touch, or sound. Cells of multi-cellular organisms also receive signals from other cells, including signals for cell division and differentiation. The majority of cells in our bodies must constantly receive signals that keep them alive and functioning. All organisms also have signaling systems that warn of the presence of pathogens, leading to a protective response. The key concept is that the many signaling systems of biology have very similar or related steps. The same signaling system can lead to very different responses in different cells or different organisms. Studies of the mechanisms of cell signaling are leading to new understanding of many diseases, and to new strategies for therapy. Instructions: The following problems have multiple choice answers. Correct answers are reinforced with a brief explanation. Incorrect answers are linked to tutorials to help solve the problem. Overview: 1. Receptors 2. Signal responses I 3. Signal responses II 4. Kinds of signals 5. Bacterial cell signaling 6. Steroid hormones 7. Second messengers 8. Protein kinase cascades 9. G-proteins 10. Signaling events 11. Gap junctions 12. Cancer therapy This resource is part of the Biology Links for One Laptop Per Child course which contains units on Exploring Life; The Cell; Genetics; Mechanisms of Evolution; The Evolutionary History of Biological Diversity; Plant Form and Function; Animal Form and Function; Ecology; and Astrobiology.


  • Science > General
  • Science > Biology

Education Levels:

  • Grade 6
  • Grade 7
  • Grade 8
  • Grade 9
  • Grade 10
  • Grade 11
  • Grade 12


student-facing cell signal protein steroid bacteria kinase pathogens



Access Privileges:

Public - Available to anyone

License Deed:

Creative Commons Attribution 3.0
This resource has not yet been aligned.
Curriki Rating
On a scale of 0 to 3
On a scale of 0 to 3

This resource was reviewed using the Curriki Review rubric and received an overall Curriki Review System rating of 3, as of 2018-08-02.

Component Ratings:

Assessments Quality: 3
Interactivity Quality: 3
Instructional Quality: 3

Reviewer Comments:

Assessments Quality: Problem sets require depth of content knowledge. Explanations for answer choice s are thorough.

Not Rated Yet.

Non-profit Tax ID # 203478467