Chemistry
Scientists Say: Rubisco
Rubisco is a key protein in the process of photosynthesis, which feeds plants — and, in turn, us.
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
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AnimalsLa nutria soporta el frío, sin un cuerpo grande ni capa de grasa
Al mamífero más pequeño del mar no le es fácil mantenerse caliente. Ahora, los científicos han descubierto cómo sus células responden al desafío.
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EnvironmentRecycling a climate-warming gas could make ‘greener’ farmed fish
Instead of warming the climate, methane gas can be collected to help farmers. Along the way, it may also save some fish.
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Animals
Here’s how sea otters stay warm without blubber or a large body
For the smallest mammal in the ocean, staying warm is tough. Now, scientists have figured out how the animals’ cells rise to the challenge.
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Earth‘Tree farts’ make up about a fifth of greenhouse gases from ghost forests
Heat-trapping gases from dead trees play an important role in the environmental impact of “ghost” forests.
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Health & MedicineCool Jobs: Saliva offers a spitting image of our health
Scientists are using this secretion to study our body’s functions, to test for disease and even to diagnose injury.
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MicrobesSeveral plant-like algae can morph into animal-like predators
Single-celled green algae swim through water as free cells. Most use only photosynthesis for their energy. But not all of them, a new study shows.
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AnimalsAnalyze 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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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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Health & MedicineWarning! 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.