7th Grade Life Science
Unit 1 – Molecules to Organisms
Characteristics of Life
Priority Performance Standard: LS1-MS-4. Construct a scientific argument based on evidence to defend a claim of life for a specific object or organism.
Supporting Performance Standard: LS1-MS-1. Conduct an investigation to provide evidence that living things are made of cells; either one cell or many different numbers and types of cells.
Priority Performance Standard: LS1-MS-2. Develop and use a model to describe the function of a cell as a whole and ways parts of cells contribute to the function.
Photosynthesis and Cellular Respiration
Priority Performance Standard: LS1-MS-5. Construct an explanation based on evidence for the role of photosynthesis in the cycling of matter and flow of energy into and out of organisms.
Supporting Performance Standard: LS1-MS-6. Develop a model to describe how food is rearranged through chemical reactions forming new molecules that support growth and/or release energy as this matter moves through an organism.
Priority Performance Standard: LS1-MS-3. Use argument supported by evidence for how a living organism is a system of interacting subsystems composed of groups of cells.
Unit 2 – Heredity
Inheritance and Variation of Traits
Priority Performance Standard: LS3-MS-1. Develop and use a model to describe why mutations may result in harmful, beneficial, or neutral effects to the structure and function of the organism.
Asexual vs Sexual Reproduction
Priority Performance Standard: LS3-MS-2. Develop and use a model to describe why asexual reproduction results in offspring with identical genetic information and sexual reproduction results in offspring with genetic variation.
Unit 3 – Biological Adaptation
Priority Performance Standard: LS4-MS-5. Gather and synthesize information about the technologies that have changed the way humans influence the inheritance of desired traits in organisms.
Organism Classification and Relatedness
Priority Performance Standard: LS4-MS-2. Apply scientific ideas to construct an explanation for the anatomical similarities and differences among modern organisms and between modern and fossil organisms to infer relationships.
Supporting Performance Standard: LS4-MS-1. Analyze and interpret data for patterns in the fossil record that document the existence, diversity, extinction, and change of life forms throughout history of life on Earth under the assumption that natural laws operate today as in the past.
Supporting Performance Standard: LS4-MS-3. Analyze displays of pictorial data to compare patterns of similarities in the anatomical structures across multiple species of similar classification levels to identify relationships.
Priority Performance Standard: LS4-MS-4. Construct an explanation based on evidence that describes how genetic variations of traits in a population increase some individuals’ probability of surviving and reproducing in a specific environment.
Supporting Performance Standard: LS4-MS-6. Use mathematical representations to support explanations of how natural selection may lead to increases and decreases of specific traits in populations over time.
Unit 4 – Ecosystems
Priority Performance Standard: LS2-MS-5. Construct an argument supported by empirical evidence that changes to physical or biological components of an ecosystem affect populations.
Supporting Performance Standard: LS2-MS-1. Analyze and interpret data to provide evidence for the effects of resource availability on organisms and populations of organisms in an ecosystem.
Interactions in Ecosystems
Priority Performance Standard: LS2-MS-2. Construct an explanation that predicts patterns of interactions among organisms across multiple ecosystems.
Energy and Matter in an Ecosystem
Priority Performance Standard: LS2-MS-3. Develop a model to describe the cycling of matter and flow of energy among living and nonliving parts of an ecosystem.
Supporting Performance Standard: LS2-MS-4. Develop a model to describe the flow of energy through the trophic levels of an ecosystem.
Enrichment Performance Standard: LS2-MS-6. Evaluate competing design solutions for maintaining biodiversity and ecosystem services.