Science Education Resource Center at Carleton College
Serc: Observe, Describe, Compare and Contrast Cells
This investigation allows students to observe cells from multiple sources. Plant, animal and bacterial cells will be observed as well as cells from multicellular organisms and single-celled organisms. After providing written descriptions...
PBS
Pbs Learning Media: Cell Differentiation
In this video segment from The Secret of Life school video, "Sex and the Single Gene" follow as a single fertilized egg cell divides, differentiates, and assembles into the tissues and organs of a new organism. [1:20]
Khan Academy
Khan Academy: Cell Cell Signaling in Unicellular Organisms
Article takes a look at how unicellular organisms "chat" with one another using chemical signals. It examines yeast mating types, bacterial quorum sensing, and biofilms.
Georgia Department of Education
Ga Virtual Learning: Biology: Taxonomy
In this multi-media module students derive the relationship between single-celled and multi-celled organisms and the increasing complexity of systems.
University of California
Tetrahymena as a Unicellular Model Organism
Information on Tetrahymena thermophila and why it is an important unicellular organism.
CK-12 Foundation
Ck 12: Life Science: Bacteria Reproduction
[Free Registration/Login may be required to access all resource tools.] Bacteria, being single-celled prokaryotic organisms, do not have a male or female version. Bacteria reproduce asexually. In asexual reproduction, the "parent"...
BiologyWise
Biology Wise: Unicellular Organisms
A unicellular organism is made of only a single cell. Its characteristics are described and several examples are provided.
Khan Academy
Khan Academy: Introduction to Development
How does an organism go from a single cell to something as complex as a frog, fly, or human being? Learn the basic principles of development.
Microscopy UK
Microscopy Uk: Micscape Article Paramecium
Excellent article on a unicellular organism, the paramecium. Includes details on its environment, paramecium types, and environmental importance.
Biology Pages
Kimball's Biology Pages: The Protists
A brief, but informative paragraph describing the parasitic nature of sporozoans, part of a larger page about single-celled organisms.
CK-12 Foundation
Ck 12: Life Science: Timeline of Evolution
[Free Registration/Login may be required to access all resource tools.] For life to evolve from simple single-celled organisms to many millions of species of prokaryotic species to simple eukaryotic species to all the protists, fungi,...
CK-12 Foundation
Ck 12: Life Science: Animal Like Protists
[Free Registration/Login may be required to access all resource tools.] Animal-like protists are called protozoa. Protozoa are single-celled eukaryotes that share some traits with animals. Like animals, they can move, and they are...
Other
Society for General Microbiology: Bacteria
Bacteria are single celled microbes. The cell structure is simpler than that of other organisms as there is no nucleus or membrane bound organelles. Instead their control centre containing the genetic information is contained in a single...
Sophia Learning
Sophia: Microbes: Protozoans
This lesson describes single-celled protozoans, highlighting their modes of movement. [46 secs]
CK-12 Foundation
Ck 12: Life Science: Bacteria Characteristics
[Free Registration/Login may be required to access all resource tools.] Bacteria are the most successful organisms on the planet. They lived on this planet for two billion years before the first eukaryotes and, during that time, evolved...
Soft Schools
Soft Schools: Protists Quiz Ii
Take this interactive, multiple-choice quiz over protists, then review your score and any missed questions at the end.
Ducksters
Ducksters: Science for Kids: Bacteria and Germs
Kids learn about the science of bacteria and germs. Small invisible single cell organisms.
Curated OER
Micscape Article: Paramecium
Excellent article on a unicelluar organism, the paramecium. Includes details on its environment, paramecium types, and environmental importance.
CK-12 Foundation
Ck 12: Life Science: Protist Characteristics
[Free Registration/Login may be required to access all resource tools.] Protists are eukaryotes, which means their cells have a nucleus and other membrane-bound organelles. Most protists are single-celled. Other than these features, they...
CK-12 Foundation
Ck 12: Life Science: Fertilization
[Free Registration/Login may be required to access all resource tools.] The sperm and egg don't look anything like a human baby. After they come together, they will develop into a human being. How does a single cell become a complex...
Khan Academy
Khan Academy: The Biology of Awareness
An article discussing how organisms responds to their environment which is one of the characteristics of life. Learn how every organisms has awareness from the single-celled to humans.
BiologyWise
Biology Wise: Classification of Amoeba (Ameba)
Describes the characteristics of amoeba and their classification.
Khan Academy
Khan Academy: Immunology of Acute vs. Chronic Inflammation
Read this passage and study the graphics to complete a five-question quiz on the Immunology of Acute vs. Chronic Inflammation.