CK-12 Foundation
Ck 12: Characteristics of Life
[Free Registration/Login may be required to access all resource tools.] Lists and describes the characteristics of life.
CK-12 Foundation
Ck 12: Life Science: Characteristics of Life
[Free Registration/Login may be required to access all resource tools.] How do you define a living thing? What do mushrooms, daisies, cats, and bacteria have in common? All of these are living things, or organisms. It might seem hard to...
Other
New Mexico Tech: The 7 Characteristics of Life
Describes the seven characteristics that define what life is for biological purposes.
City University of New York
Brooklyn College: Exploring Life @ Bi Odot Edu: Signs of Life: Complexity
A nice introduction to the idea that living things are highly organized at several different levels. Great as an introduction to biological complexity.
McGraw Hill
Glencoe Biology: Introduction to Biology: Self Check Quiz
A five question multiple-choice quiz over general biology concepts. After answers are submitted, students have the opportunity to review the missed questions.
Morning Earth
Life Lives in Circles: Introduction Life Materials Cycle and Re Cycle
Scholars explore the Biology concept of life cycles. The tutorial consists of definitions, examples, and pictures. Topics include the great circle dance and life-materials.
Georgia Department of Education
Ga Virtual Learning: Ap Biology: Diversity
An online course with interactive activities and learning exercises give students the opportunity to look at the tree of life and to determine how and why scientists believe each domain, species, and everything in between have such...
Tree of Life Project
The Tree of Life Web Project
The Tree of Life Web Project contains information on living organisms including their history and characteristics. Over 3,000 web pages are linked together uniting all living things.
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.
CK-12 Foundation
Ck 12: Life Science: Domains of Life
[Free Registration/Login may be required to access all resource tools.] Humans are in the same domain as trees and algae. What could they possibly have in common? It is the location of their DNA inside their cells. Their cells all have a...
CK-12 Foundation
Ck 12: Life Science: 7.1 Plant Characteristics
A textbook tutorial over biological characteristics of plants.
Other
Alameda County Mosquito Abatement: Life Cycle
A discussion on the general characteristics of the mosquito, its feeding habits, flight habits and life cyle.
BiologyWise
Biology Wise: Marine Biology Facts
Discusses the unique characteristics of the oceans and the many organisms that live in a marine ecosystem.
CK-12 Foundation
Ck 12: Life Science: Aquatic Biomes
[Free Registration/Login may be required to access all resource tools.] Aquatic biomes can be generally classified based on the amount of salt in the water. Freshwater biomes have less than 1% salt and are typical of ponds and lakes,...
CK-12 Foundation
Ck 12: Biology: Cnidarians
[Free Registration/Login may be required to access all resource tools.] Discusses characteristics of cnidarians like jellyfish and corals.
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...
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: Vertebrate Characteristics
[Free Registration/Login may be required to access all resource tools.] Vertebrates are animals with backbones. These include fish, amphibians, reptiles, birds, and mammals. Learn more about vertebrate characteristics in this learning...
CK-12 Foundation
Ck 12: Life Science: Mammal Characteristics
[Free Registration/Login may be required to access all resource tools.] What is a mammal? They walk, run, swim, and fly. They live in the ocean, fly in the sky, walk on the prairies, and run in the savanna. There is a tremendous amount...
CK-12 Foundation
Ck 12: Biology: Annelids
[Free Registration/Login may be required to access all resource tools.] Discusses characteristics of annelids like earthworms.
CK-12 Foundation
Ck 12: Life Science: Fungi Classification
[Free Registration/Login may be required to access all resource tools.] Scientists used to think that fungi were members of the plant kingdom. They thought this because fungi had several similarities to plants. However, there are a...
CK-12 Foundation
Ck 12: Life Science: Mammal Classification
[Free Registration/Login may be required to access all resource tools.] Traditionally, mammals were divided into groups based on their characteristics. Scientists took into consideration their anatomy, their habitats, and their feeding...
CK-12 Foundation
Ck 12: Life Science: Salamanders
[Free Registration/Login may be required to access all resource tools.] Salamanders are characterized by slender bodies, short legs, and long tails. They are most closely related to the caecilians, little-known legless amphibians. Learn...
CK-12 Foundation
Ck 12: Life Science: Humans and Primates
[Free Registration/Login may be required to access all resource tools.] The great apes are the members of the biological family Hominidae, which includes four living genera: chimpanzees, gorillas, humans, and orangutans. Learn more about...