Science Buddies
Science Buddies: Nitrogen Fixing Bacteria and Nitrogen Fertilizers
Plants need nitrogen to build proteins and nucleic acids to grow healthy stems and leaves. Though the Earth's atmosphere is made up of 79% nitrogen, the form of nitrogen found in the atmosphere cannot be used by plants. In this...
Khan Academy
Khan Academy: Apoptosis
Learn about programmed cell death and how it is different from necrosis, cell death due to injury.
Vision Learning
Visionlearning: Energy in Living Systems: Generation of Atp
Explanation of biochemical processes in cells during metabolism. Focus is on the generation of ATP.
Vision Learning
Visionlearning: Energy in Living Systems: Harnessing the Energy of the Sun
Background information on the history of photosynthesis. An explanation for how light is used to assist in making food for plants as the transfer of electrons allows energy to flow through the system.
Vision Learning
Visionlearning: Energy in Living Systems: Energy Metabolism I
Detailed explanation of how food is broken down and metabolized in our bodies to be used for energy.
CK-12 Foundation
Ck 12: Meiosis
[Free Registration/Login may be required to access all resource tools.] How do you make a cell with half the DNA? Meiosis. This activity outlines the phases of meiosis, provides an overview of sexual reproduction, and describe how...
CK-12 Foundation
Ck 12: Virus Replication
[Free Registration/Login may be required to access all resource tools.] How do viruses replicate? In this lesson, students will learn how a virus produces new copies of itself.
Khan Academy
Khan Academy: Regulation of Cellular Respiration
This article investigates how cellular respiration can be sped up or slowed down in response to ATP levels and other metabolic signals.
Khan Academy
Khan Academy: Intro to Photosynthesis
Discussion of the conversion of light energy to chemical energy through the life-sustaining process of photosynthesis. Explores the reactions of photosynthesis, where they take place, and their ecological importance.
CK-12 Foundation
Ck 12: Connecting Cellular Respiration and Photosynthesis
[Free Registration/Login may be required to access all resource tools.] How do trees help you breathe? This activity covers the connection between cellular respiration and photosynthesis and identifies the products and reactants of each.
CK-12 Foundation
Ck 12: Life Science: Cyclic Behavior of Animals
[Free Registration/Login may be required to access all resource tools.] Many animal behaviors change in a regular way. They go through cycles. Some cycles of behavior repeat each year. Other cycles of behavior repeat every day. Learn...
Khan Academy
Khan Academy: Animal & Human Viruses
Learn about viruses of humans and other animals, the Baltimore classification system, and the HIV life cycle.
CK-12 Foundation
Ck 12: Female Reproductive Structures
[Free Registration/Login may be required to access all resource tools.] Think producing millions of sperm each day is complicated?If producing millions of sperm each day, as in the male reproductive system, is complicated, that is...
CK-12 Foundation
Ck 12: Life Science: Dna Structure and Replication
[Free Registration/Login may be required to access all resource tools.] DNA must replicate (copy) itself so that each resulting cell after mitosis and cell division has the same DNA as the parent cell. DNA replication occurs during the S...
CK-12 Foundation
Ck 12: Unit 4: Vocabulary
[Free Registration/Login may be required to access all resource tools.] Lists vocabulary terms associated with the cell cycle.
TeachEngineering
Teach Engineering: Swim to and From the Sea!
Learners are introduced to the basic biology behind Pacific salmon migration and the many engineered Columbia River dam structures that aid in their passage through the river's hydroelectric dams. Students apply what they learn about the...
McGraw Hill
Mc Graw Hill Companies: Critical Thinking Exercises
10 valuable critical thinking exercises ranging in subject matter. Includes questions and exercises regarding biological development, language usage, morals, values and ethics, and thought cycles.
TeachEngineering
Teach Engineering: Waves: The Three Color Mystery
Students are presented with a challenge question concerning color blindness and asked to use engineering principles to design devices to help people who are color blind. Using the legacy cycle as a model, this unit is comprised of five...
University of Michigan
University of Michigan: Viruses
This resource offers an outline of basic virus characteristics, including the reproductive process for viruses.
CK-12 Foundation
Ck 12: Life Science: Infancy and Childhood
[Free Registration/Login may be required to access all resource tools.] The first year after birth is called infancy. Infancy is a period when the baby grows very fast. During infancy, the baby doubles in length and triples in weight....
Other
University of Cincinnati Clermont: Cellular Respiration and Fermentation
A good general review of aerobic and anaerobic respiration. Good graphics and good embedded vocabulary links.
Other
Clermont College: Photosynthesis
Background information on photosynthesis accompanied by graphics covers leaf and chloroplast anatomy, explanation of reaction phases, and alternative pathways. Terms linked to glossary.
CK-12 Foundation
Ck 12: Life Science: Process of Cellular Respiration
[Free Registration/Login may be required to access all resource tools.] Why do you need air to live? Of course if you didn't breathe, you couldn't survive. You need the gas oxygen to perform cellular respiration to get energy from your...
CK-12 Foundation
Ck 12: Life Science: Light Reactions of Photosynthesis
[Free Registration/Login may be required to access all resource tools.] Although we generally discuss plants when learning about photosynthesis, keep in mind that plants are not the only organisms that can make their own food. Some...