Cell Communication
Associated text: Campbell Biology Chapter 11
Watch 4 video lectures from Bozeman science http://www.bozemanscience.com/ap-biology/
All of the videos are numbered. Watch videos 036, 037, 038, and 039 (these videos are also on YouTube if you
search for them).
036 - Evolutionary Significance of Cell Communication (7:02) Paul Andersen describes how cell communication
is used in both single-celled and multicellular organisms. He starts by describing the symbiotic relationship between
the bobtail squid and the bacteria Vibrio fisheri. He explains how bacteria use quorum sensing to communicate
between each other and respond to changes in their environment. He also explains how multicellular organisms (like
humans) can coordinate activities. He explains how epinephrine release from the adrenal gland can trigger a series
of signal transduction pathways that can eventually lead to the release of glucose from the liver.
037 - Cell Communication (10:35) Paul Andersen discusses cell communication. He begins by explaining how he
communicates with other individuals using various forms of electronic communication. He them explains how cells
communicate when the distance between them is big, small, and zero. He explains how antigen presenting cells pass
information on antigen structure by touching in the immune response. He explains how neurotransmitters are used to
transfer and manipulate nerve signals. And he finally explains how the endocrine system sends messages throughout
the body.
038 - Signal Transduction Pathways (9:25) Paul Andersen explains how signal transduction pathways are used by
cells to convert chemical messages to cellular action. Epinephrine is used as a sample messenger to trigger the
release of glucose from cells in the liver. The G-Protein, adenylyl cyclase, cAMP, and protein kinases are all used as
illustrative examples of signal transduction. A review of the concepts is also included.
039 - Effects of Changes in Signal Transduction Pathways (5:44) Paul Andersen explains how changes in the
signal transduction pathway can affect organisms. He begins with a brief discussion of the tetrodotoxin produced by
the California Newt. He then explains how anthrax affects adenylate cyclase and thereby shuts down the signal
transduction pathway. He also explains how diabetes mellitus is caused by the blood glucose pathway. A brief
discussion of zombie powder is also included.
TUTORIALS:
Cell Signaling Pathway http://highered.mcgrawhill.com/sites/9834092339/student_view0/chapter10/cell_proliferation_signaling_pathway.html
o Take the 5-question self-quiz at the end. Print, or email me a screenshot of your score to prove
you did this.
Biomembranes II: Membrane Dynamics and Communication
http://www.phschool.com/science/biology_place/biocoach/biomembrane2/intro.html
o Take the 11-question self-quiz at the end. Print, or email me a screenshot of your score to prove
you did this.
Read Chapter 11 “Cell Communication” in your Campbell Biology textbook. Complete the 21 homework
questions given out in class (also available on website).