1 / 10

A one-celled organism

A one-celled organism. Standard 4 key idea 1 performance indicator 1.1 major understanding 1.3a. Bell Ringer. True or false? All prokaryotes are one-celled (unicellular.) 2. All eukaryotes are multicellular. True. False: Some eukaryotes such as protists are unicellular.

trey
Download Presentation

A one-celled organism

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. A one-celled organism Standard 4 key idea 1 performance indicator 1.1 major understanding 1.3a

  2. Bell Ringer • True or false? • All prokaryotes are one-celled (unicellular.) 2. All eukaryotes are multicellular. True False: Some eukaryotes such as protists are unicellular.

  3. A one-cell (unicellular) organism Prokaryotic unicellular organisms: bacteria and archaea. All prokaryotic organisms are unicellular. Eukaryotic unicellular organisms: Protists and some fungi are unicellular.

  4. Prokaryotic unicellular organisms: bacteria and archaea. http://www.nicerweb.com/bio1100b/Locked/media/ch01/kingdom_Archaea.html http://www.scilogs.com/from_the_lab_bench/computers-and-electrifying-bacteria/

  5. Eukaryotic unicellular organisms: Protists and some fungi • Examples: ameba and paramecium http://www.microscope-microscope.org/gallery/Mark-Simmons/pages/paramecium2.htm http://www.microscopy-uk.org.uk/mag/indexmag.html?http://www.microscopy-uk.org.uk/mag/wimsmall/sundr.html

  6. A one-celled organism is able to function despite lacking the levels of organization present in more complex organisms.  In other words, a unicellular organism does not have tissues, organs, and organ systems that are found in multicellular organisms.

  7. The structures present in some singled-celled organisms act in a manner similar to the tissues and systems found in multicellular organisms. This enables them to perform all of the life processes needed to maintain homeostasis. What does this mean?  next page

  8. Example: the paramecium

  9. Sample question • The excretory organelles of some unicellular organisms are contractile vacuoles and • cell membranes • ribosome • cell walls • centrioles (1) Cell membranes

  10. Exit ticket Pick an organelle of a paramecium and write its function. Write an organ or organ system of humans that is equivalent (has the same function) of your choice of organelle.

More Related