Life Science

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    From Molecules to Organisms: Structures and Processes

    1. 1

      Construct an explanation based on evidence for how the structure of DNA determines the structure of proteins which carry out the essential functions of life through systems of specialized cells.HS-LS1-1

    2. 2

      Develop and use a model to illustrate the hierarchical organization of interacting systems that provide specific functions within multicellular organisms.HS-LS1-2

    3. 3

      Plan and conduct an investigation to provide evidence that feedback mechanisms maintain homeostasis in living organisms.HS-LS1-3

    4. 4

      Use a model to illustrate the role of the cell cycle and differentiation in producing and maintaining complex organisms.HS-LS1-4

    5. 5

      Use a model to illustrate how photosynthesis transforms light energy into stored chemical energy.HS-LS1-5

    6. 6

      Construct and revise an explanation based on evidence for how carbon, hydrogen, and oxygen from sugar molecules may combine with other elements to form amino acids and/or other large carbon-based molecules.HS-LS1-6

    7. 7

      Use a model to illustrate that cellular respiration is a chemical process whereby the bonds of food molecules and oxygen molecules are broken and the bonds in new compounds are formed, resulting in a net transfer of energy.HS-LS1-7

    8. 8

      Obtain, evaluate, and communicate information about (1) viral and bacterial reproduction and adaptation, (2) the body’s primary defenses against infection, and (3) how these features impact the design of effective treatment.HS-LS1-8

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    Ecosystems: Interactions, Energy and Dynamics

    1. 1

      Use mathematical and/or computational representations to support explanations of factors that affect carrying capacity, biodiversity and populations of ecosystems at different scales.HS-LS2-1

    2. 4

      Use mathematical representations to support claims for the cycling of matter and flow of energy among organisms in an ecosystem.HS-LS2-4

    3. 6

      Evaluate the claims, evidence and reasoning that the complex interactions in ecosystems maintain relatively consistent numbers and types of organisms in stable conditions, but changing conditions may result in a new ecosystem.HS-LS2-6

    4. 7

      Design, evaluate, and refine a solution for reducing the impacts of human activities on the environment and biodiversityHS-LS2-7

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    Heredity: Inheritance and Variation of Traits

    1. 1

      Formulate, refine, and evaluate questions to clarify relationships about the role of DNA and chromosomes in coding the instructions for characteristic traits passed from parents to offspring.HS-LS3-1

    2. 2

      Make and defend a claim based on evidence that inheritable genetic variations may result from: (1) new genetic combinations through meiosis, (2) viable errors occurring during replication, and/or (3) mutations caused by environmental factors.HS-LS3-2

    3. 3

      Apply concepts of statistics and probability to explain the variation and distribution of expressed traits in a population.HS-LS3-3

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    Biological Evaluation: Unity and Diversity

    1. 1

      Analyze and interpret scientific information that common ancestry and biological evolution are supported by multiple lines of empirical evidence.HS-LS4-1

    2. 2

      Construct an explanation based on evidence that biological diversity is influenced by (1) the potential for a species to increase in number, (2) the heritable genetic variation of individuals in a species due to mutation and sexual reproduction, (3) competition for limited resources, and (4) the proliferation of those organisms that are better able to survive and reproduce in the environment.HS-LS4-2

    3. 3

      Apply concepts of statistics and probability to support explanations that populations of organisms adapt when an advantageous heritable trait increases in proportion to organisms lacking this trait.HS-LS4-3

    4. 4

      Construct an explanation based on evidence for how natural selection and other mechanisms lead to genetic changes in populations.HS-LS4-4

    5. 5

      Evaluate evidence supporting claims that changes in environmental conditions can affect the distribution of traits in a population causing: (1) increases in the number of individuals of some species, (2) the emergence of new species over time, and (3) the extinction of other species.HS-LS4-5

Frequently asked questions

What grade levels do these standards cover?
Grade 9, Grade 10, Grade 11, and Grade 12
Where can I read the official document?
Science Standards - Life Science