Cellular respiration also releases the energy needed to maintain body temperature despite ongoing energy transfer to the surrounding environment. Cellular respiration is a chemical process in which the bonds of food molecules and oxygen molecules are broken and new compounds are formed that can transport energy to muscles.

As a result of these chemical reactions, energy is transferred from one system of interacting molecules to another.

As matter and energy flow through different organizational levels of living systems, chemical elements are recombined in different ways to form different products.

The sugar molecules thus formed contain carbon, hydrogen, and oxygen: their hydrocarbon backbones are used to make amino acids and other carbon-based molecules that can be assembled into larger molecules (such as proteins or DNA), used-for example-to form new cells.

The process of photosynthesis converts light energy to stored chemical energy by converting carbon dioxide plus water into sugars plus released oxygen.

Organization for Matter and Energy Flow in Organisms

Construct and revise an explanation based on valid and reliable evidence obtained from a variety of sources (including students’ own investigations, models, theories, simulations, peer review) and the assumption that theories and laws that describe the natural world operate today as they did in the past and will continue to do so in the future.(HS-LS2-4)Ĭonstructing Explanations and Designing Solutions Use mathematical representations of phenomena or design solutions to support claims.Using Mathematics and Computational Thinking Develop a model based on evidence to illustrate the relationships between systems or components of a system.

Khan academy cell biology