In photosynthesis, a thylakoid is a sac located in a chloroplast which absorbs light in the form of photons through proteins called Photosystems I and II and cytochrome complexes and uses it to harvest ATP. All of this occurs during the light reaction step of photosynthesis on the membranes of the thylakoids.
Usually during exercise, unlike during rest times the muscle cells need to respire more. So they need more oxygen and glucose for energy and the carbon-dioxide produced as waste must be removed quickly. So when person gets tired or breathes heavily during intensive workouts means they are in need of more oxygen. So the cells starts performing anaerobic(lactic acid ) respiration even though it releases less energy.
Mitosis is is two identical daughterter cells while meiosis results in four sex cells.
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This scale of evolution occurs above the level of the species. Fossils provide evidence for evolution at this scale. The evolution of the horse family. Micro evolution is evolutionary change within a species or small group of organisms, especially over a short period. And Macro evolution is major evolutionary change. The term applies mainly to the evolution of whole taxonomic groups over long periods of time.
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