Monthly Archives: November 2011

Bioluminescence

Noctiluca scintillans (Sea Sparkle) is a dinoflagellate (a single-celled organism with 2 flagella) that lives near the surface of the ocean and its diet consists mainly of plankton. Although it is single-celled, its cell is quite large compared to other single-celled organisms and usually only one of the two flagella is visible. The flagellum is not used for movement, but rather to feed. It moves food into the mouth and removes waste.  It is the most common source of bioluminescence in the ocean. They emit a blue or green light from organelles within the cell (a chemical reaction). It creates it’s own source of light, unlike many other sea-faring bioluminescent creatures which rely on bacteria to produce light for them.

Some Pictures

close up of multiple sea sparkles

A whole coastline glowing because of all the sea sparkles

APA CITATIONS

References

Bioluminescence [Photograph]. (n.d.). Retrieved from http://en.citizendium.org/‌images/‌thumb/‌8/‌86/‌Bioluminescence.jpg/‌200px-Bioluminescence.jpg

C, A. (n.d.). Bioluminescence in the Living World. Retrieved November 29, 2011, from HubPages website: http://aliciac.hubpages.com/‌hub/‌Bioluminescence-in-the-Living-World

Noctiluca Scintillans. (n.d.). Retrieved November 29, 2011, from Oceana website: http://na.oceana.org/‌en/‌explore/‌marine-wildlife/‌noctiluca-scintillans

Noctiluca Scintillans Varias [Photograph]. (n.d.). Retrieved from http://upload.wikimedia.org/‌wikipedia/‌commons/‌5/‌53/‌Noctiluca_scintillans_varias.jpg

How Hydra’s interact with their environment -Predatory

Hydra are predators. Their tentacles are like jellyfishes; they have little stinging barbs (cells called Cnidocytes) that when touched, expel a poisonous thread towards the prey. The prey usually trigger many Cnidocytes at once, resulting in a fatal dose of neurotoxins.

This video shows a Hydra hunting and eating a Daphnia- ENJOY

Images
Hydra with tentacles:

Close up of hydra tentacle (end of it)

citations
http://www.ehow.com/info_8511524_adaptations-hydra.html

Adopted organelle- The Golgi Body

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Citations:

Campbell, N.A., Reece, J.B., Taylor, M.T., Simon, E.J., Dickey, J.L. (2009). Biology: Concepts and Connections. (6th ed.) San. Franciso, CA. Pearson Benjamin Cummings.

http://www.williamsclass.com/SeventhScienceWork/ImagesCells/GolgiBody3.jpg

http://biology.unm.edu/ccouncil/Biology_124/Images/golgipic.jpeg

 

 

Animal cell coloring plate

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20111101-103315.jpgIt may be hard to see, but to actively read the page of notes, I went over the important sections in a translucent pink

The most interesting organelle

For me, the most interesting organelle in a cell is the Golgi-Apparatus. Its the most interesting because its name just jumps out of you and it has a very important function within the cell of sorting and modifying proteins.