HS-LS1-7

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.

More Stories in HS-LS1-7

  1. Animals

    Analyze This: Cows burp less methane after early-life treatment

    Calves that receive the 14-week treatment belch less of the greenhouse gas, possibly due to shifts in their gut microbes.

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  2. Scientists Say: Respiration

    Breathe in and out, that’s respiration. Have a cell break down sugars for energy, and that’s respiration too.

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  3. Health & Medicine

    Warning! Junk foods can harm a teen’s brain

    The adolescent brain has a hard time resisting junk food. But high-fat, high-sugar diets can interfere with learning and pose risks to mental health.

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  4. Planets

    Planets with hydrogen skies could harbor life

    Microbes can live in a hydrogen atmosphere. This points to new space worlds that host alien life.

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  5. Physics

    There’s science to making great fried rice

    Scientists report finding the physics that seems to explain how chefs can quickly fry rice over a hot flame without burning the food.

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  6. Brain

    As teens gain weight, they find high-fat foods less pleasurable

    Teens who gained excess weight showed less activity in the brain’s reward center when viewing or tasting foods with lots of fat.

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  7. Plants

    Scientists look to hack photosynthesis for a ‘greener’ planet

    Photosynthesis turns sunlight into energy for plants. Scientists want to know more about it, imitate it — even improve it.

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  8. Health & Medicine

    Ultrasound might become a new way to manage diabetes

    Ultrasound turns on production of the hormone insulin in mice. Someday, it might help maintain healthy blood-sugar levels in people who were recently diagnosed with diabetes.

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  9. Health & Medicine

    Explainer: What are proteins?

    In the body, proteins act as biochemical machines to carry out the work of cells.

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