Introduction to carbon as a building block of life.
- Subject:
- Biology
- Life Science
- Material Type:
- Lesson
- Provider:
- Khan Academy
- Provider Set:
- Khan Academy
- Author:
- Sal Khan
- Date Added:
- 07/06/2015
Introduction to carbon as a building block of life.
This seminar contains resources to explore why carbon is the basis for all life forms. Activities show how the structural characteristics of carbon allow it to be both efficient and versatile to form the basis of all life. A learning lab creates a visual discovery of the unique bonding capacity of the carbon atom and how it can create a variety of biological structures that support life. StandardsBIO.A.2.2.1 Explain how carbon is uniquely suited to form biological macromolecules.
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Common elemental building blocks of biological molecules: Carbon, Oxygen, Hydrogen, Nitrogen and Phosphorus.
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In this 8th grade science lesson, students review the six essential elements of life and discuss how they function in the garden.
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This video segment adapted from NOVA illustrates why carbon is at the center of life on Earth. It also asks whether carbon-based life might exist on other planets.
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This resource is a video abstract of a research paper created by Research Square on behalf of its authors. It provides a synopsis that's easy to understand, and can be used to introduce the topics it covers to students, researchers, and the general public. The video's transcript is also provided in full, with a portion provided below for preview:
"Human activity is driving an increase in the amount of atmospheric reactive nitrogen. California grassland growth is typically limited by the amount of available nitrogen. Thus, more available nitrogen leads to more plant biomass, which means more carbon is deposited in the soil. Both the increase in nitrogen itself and the increase in carbon affect soil microbes. To better understand these impacts, a recent study examined microbial metabolic functioning in experimental grassland plots in California. These plots had been maintained for 14 years with increased nitrogen deposition mimicking the predicted levels for the end of the 21st century. This increased deposition led to an increased abundance of fast-growing bacterial species, as well as an increased capacity to use easily accessible, or labile, carbon sources. In contrast, the community's capacity to degrade recalcitrant carbon sources was unchanged or even decreased by elevated nitrogen..."
The rest of the transcript, along with a link to the research itself, is available on the resource itself.
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El objetivo del caso de la captura del carbono en los bosques a nivel escuela preparatoria es basarse en la ciencia de la captura de carbono del caso de la escuela secundaria. En este caso, la captura de carbono se refiere a la eliminación de carbono (en forma de dióxido de carbono) de la atmósfera a través del proceso de fotosíntesis. El almacenamiento de carbono se refiere a la cantidad de carbono unido al material leñoso por encima y por debajo del suelo. Los estudiantes de preparatoria desarrollarán una comprensión de las variables y consideraciones que surgen del manejo de los bosques para diferentes propósitos, incluida la captura o secuestro de carbono y otros servicios del ecosistema.
Los estudiantes exploran el fenómeno de cómo un árbol obtiene su masa. Se les anima a pensar en lo que saben sobre la fotosíntesis y explicar lo que saben y lo que se preguntan sobre el fenómeno de una semilla que se transforma en un árbol grande y tiene masa. Específicamente, el carbono se absorbe de la atmósfera en forma de CO2 y se transforma en glucosa para proporcionar energía y, en última instancia, material de construcción (celulosa). En este caso, la captura de carbono se refiere a la eliminación de carbono (en la forma de dióxido de carbono) de la atmósfera a través del proceso de fotosíntesis. El almacenamiento de carbono se refiere a la cantidad de carbono unido al material leñoso por encima y por debajo del suelo.
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Over several days, students learn about composites, including carbon-fiber-reinforced polymers, and their applications in modern life. This prepares students to be able to put data from an associated statistical analysis activity into context as they conduct meticulous statistical analyses to evaluate/determine the effectiveness of carbon fiber patches to repair steel. This lesson and its associated activity are suitable for use during the last six weeks of an AP Statistics course; see the topics and timing note for details. A PowerPoint® presentation and post-quiz are provided.
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