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Key Concepts in Biology

The Key Concepts in Biology collection provides quick and easy access to high-quality high school biology resources. These resources have been selected by trusted educators to correlate with the BSCS Biology: A Human Approach Curriculum. This curriculum highlights nine key concepts in six units of study: Evolution, Homeostasis, Energy, Matter, and Organization, Reproduction and Inheritance in Living Systems, Growth Development, and Differentiation, and Ecology.

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  • Key Concepts in Biology
Abiotic and Biotic Factors
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This two-day lesson helps students understand abiotic and biotic factors. Once the concept has been grasped, they can trace the interactions of these factors within a system.

Subject:
Life Science
Ecology
Forestry and Agriculture
Geoscience
Material Type:
Activity/Lab
Provider:
NSDL Staff
Provider Set:
Key Concepts in Biology
Author:
Richmond, Mary Janice
Date Added:
10/06/1999
Acids in Proteins
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This lesson describes how amino acids build proteins in a person's body. Amino acids are the chemical building blocks for the structure of an organism. A link to a quiz is provided at the end of the lesson to check comprehension.

Subject:
Life Science
Material Type:
Lesson Plan
Provider:
NSDL Staff
Provider Set:
Key Concepts in Biology
Date Added:
06/19/2012
Carrying Capacity
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This one-day activity challenges students to understand the ecological concept of carrying capacity through the physically-active process of role playing. Upon completion, students will be able to formulate and test hypotheses related to ecosystems and carrying capacity as well as describe the significance of carrying capacity.

Subject:
Life Science
Ecology
Forestry and Agriculture
Geoscience
Material Type:
Activity/Lab
Lesson Plan
Provider:
NSDL Staff
Provider Set:
Key Concepts in Biology
Date Added:
11/04/1992
Cells and Homeostasis
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This presentation from Bruce Coulter covers the basics of how cells contribute to the process of homeostasis. Sixteen slides are included and cover the transport of materials into and out of the cell, the process of homeostasis, what tissues are, plasma membranes, the fluid mosaic model, membrane proteins, cholesterol molecules, and passive and active transport. The slides also include a number of links to useful animations depicting these processes. A transcript is provided, and Flash is required to view the slides.

Subject:
Life Science
Material Type:
Activity/Lab
Lesson Plan
Provider:
NSDL Staff
Provider Set:
Key Concepts in Biology
Author:
Coulter, Bruce
Date Added:
09/16/2010
DNA Presentation
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This 28 minute presentation provides basic information on DNA. The structure of DNA as well as the four bases are discussed in detail. The process of creating proteins is also explained.

Subject:
Life Science
Material Type:
Lecture Notes
Provider:
NSDL Staff
Provider Set:
Key Concepts in Biology
Date Added:
11/04/2010
The Diversity of Animals
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This presentation from Hippocampus introduces the concept of biodiversity via a series of narrated animations. The material is broken down into five sections: Animal Fundamentals, Body Plans, Protostomes and Deuterostomes and a conclusion. Students will learn both how species are different from one another and the common bonds all living things share. Students may choose to skip between sections, or explore other related concepts on the biology portion of the Hippocampus site.

Subject:
Life Science
Material Type:
Activity/Lab
Provider:
NSDL Staff
Provider Set:
Key Concepts in Biology
Date Added:
06/11/2012
Energy and Order in Biological Systems
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This lesson explains how energy is used to keep the structure of an organism maintained. Otherwise, systems naturally progress from order to disorder according to the second law of thermodynamics. Key terms are hyperlinked to provide more detailed explanations.

Subject:
Life Science
Material Type:
Diagram/Illustration
Lesson Plan
Provider:
NSDL Staff
Provider Set:
Key Concepts in Biology
Date Added:
06/19/2012
Food Chains and Food Webs
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This lesson explains how energy travels through an ecosystem. This flow can be diagrammed in food chains and food webs as shown in the lesson's illustrations. Key terms are hyperlinked so students can easily view definitions of new concepts.

Subject:
Life Science
Material Type:
Activity/Lab
Diagram/Illustration
Lesson Plan
Provider:
NSDL Staff
Provider Set:
Key Concepts in Biology
Date Added:
06/14/2012
The Human Organism: Introduction to Human Body Systems
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This multimedia lesson from Baylor College of Medicine's BioEd Online project introduces the systems of the human body. Deanne Erdmann covers the levels of organization in the body, the types of tissue, organ systems, and the skeletal system. The total running time for the program is one hour three minutes. Real player is required to view the content.

Subject:
Life Science
Provider:
NSDL Staff
Provider Set:
Key Concepts in Biology
Author:
Erdmann, Deanne
Date Added:
06/19/2012
The Human Spark: Being Human
Restricted Use
Copyright Restricted
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This lesson plan from PBS covers a variety of biology topics related to the human as an animal. Students will view and discuss segments from the PBS program The Human Spark. In the first learning activity, the class will explore how human thought differs from that of other species. In the second learning activity, students will examine different traits and abilities, how these abilities have evolved to help humans deal with their environment, and how they distinguish humans from other animals.

Subject:
Life Science
Material Type:
Activity/Lab
Lesson Plan
Provider:
NSDL Staff
Provider Set:
Key Concepts in Biology
Author:
WNET (Television station : New York, N.Y.)
Date Added:
07/05/2010
Laws of Thermodynamics
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This lesson explains the two laws of thermodynamics that govern the relationship between energy and natural systems. These are the Law of Conservation of Energy and Law of Entropy. Key terms are hyperlinked so that students can easily find definitions to unfamiliar words.

Subject:
Life Science
Material Type:
Diagram/Illustration
Lesson Plan
Provider:
NSDL Staff
Provider Set:
Key Concepts in Biology
Date Added:
06/11/2012
Meiosis and Sexual Reproduction
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This lesson describes how meiosis makes sexual reproduction possible. Specifically, meiosis produces haploid cells and allows for genetic variation. Key terms in this lesson are hyperlinked so students can easily find definitions to new words.

Subject:
Life Science
Material Type:
Lesson Plan
Provider:
NSDL Staff
Provider Set:
Key Concepts in Biology
Date Added:
11/04/2014
Photorespiration
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This 17 minute lecture explains photorespiration in detail. All chemical equations are explained so viewers gain a thorough understanding of the chemicals involved and how they react.

Subject:
Life Science
Material Type:
Lecture Notes
Lesson Plan
Provider:
NSDL Staff
Provider Set:
Key Concepts in Biology
Date Added:
11/04/2010
Photosynthesis
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This 13 minute lecture discusses how plants convert sunlight into carbohydrates through photosynthesis. The chemical equations and reactions involved in this process are explained in depth including light and dark reactions.

Subject:
Life Science
Material Type:
Lecture Notes
Lesson Plan
Provider:
NSDL Staff
Provider Set:
Key Concepts in Biology
Date Added:
11/04/2010
Preparation for Meiosis
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This lesson describes meiosis and its purpose. Diagrams illustrate each stage in the preparation of the cells. Key terms are hyperlinked so students can easily find definitions to new words.

Subject:
Life Science
Material Type:
Lecture Notes
Provider:
NSDL Staff
Provider Set:
Key Concepts in Biology
Date Added:
11/04/2014
The Punnett Square
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This lesson provides an introduction to Punnett Squares. Key terms are hyperlinked so that students can easily bring up definitions to unfamiliar words. Graphics further explain the concepts in the lesson.

Subject:
Life Science
Material Type:
Diagram/Illustration
Lecture Notes
Provider:
NSDL Staff
Provider Set:
Key Concepts in Biology
Date Added:
06/04/2012
Punnett Square Case Study
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In this lesson, students will gain experience using Punnett Squares. The case study determines the probability of children having freckles from a freckled father and non-freckled mother. Illustrations guide each step of the case study.

Subject:
Life Science
Material Type:
Activity/Lab
Case Study
Diagram/Illustration
Lesson Plan
Provider:
NSDL Staff
Provider Set:
Key Concepts in Biology
Date Added:
11/04/2014
Reproductive Strategies
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Students work in pairs to compare five aspects of an organism that reproduces sexually with one that reproduces asexually. A variety of organisms are profiled including sand scorpions, red kangaroos, and meadow garlic. As a class, students share their comparisons and generate a list of general characteristics for each mode of reproduction, and discuss the advantages and disadvantages of both. References are included for information on reproduction of various organisms.

Subject:
Life Science
Material Type:
Activity/Lab
Lesson Plan
Provider:
NSDL Staff
Provider Set:
Key Concepts in Biology
Date Added:
11/04/2008
Requirements for Life - Energy
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This short lesson explains why energy is required for all living things. Types of energy are discussed and an illustration shows examples of the different types of energy. Key terms are hyperlinked so students can easily view definitions to unfamiliar words.

Subject:
Life Science
Material Type:
Diagram/Illustration
Lesson Plan
Provider:
NSDL Staff
Provider Set:
Key Concepts in Biology
Date Added:
06/11/2012
Requirements for Life - Matter
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This short lesson explains that matter is required for all living things. An accompanying illustration shows how a peanut butter and jelly sandwich is made of matter. Key terms are hyperlinked so students can easily view definitions of unfamiliar terms.

Subject:
Life Science
Material Type:
Diagram/Illustration
Lesson Plan
Provider:
NSDL Staff
Provider Set:
Key Concepts in Biology
Date Added:
06/11/2012