unit 4 Flashcards
how is energy produced
food is consumed, and broken down into smaller molecules by the digestive system. these molecules are transported to the body cells into the blood stream. where they are converted into energy
carbohydrates rich foods
rice, potatoes and grains
simple sugars
glucose
Respiration
the chemical process in the cells by which fuel is converted into usable energy
glucose
provide via the digestion of carbohydrates
conervbeted into reusable energy via respiration
aerobic equation
glucose + oxygen –> water + carbon dioxide + energy
aerobic
respiration that takes place in the presence of oxygen
oxygen combines with glucose to produce energy
aerobic byproducts
water and carbon dioxide are released
these are harmless and removed easily
examples of sports that use aerobic
marathon runners, cycling, hiking
aerobic features
produces energy slowly
suitable for low moderate intensity physical activities
continues producing energy over long periods of time
suitable for high duration physical activities
anaerobic equation
glucose –> lactic acid + energy
anaerobic
respiration that takes place in the absence of oxygen
glucose is converted into energy ATP directly
anaerobic by-products
lactic acid is produced which causes the muscles to fatigue tire quickly
aerobic characteristics
produces energy extremely quickly
suitable for high intensity physical activities
fuel quickly runs out and lactic acid causes fatigues
activity can only be sustained over short durations
anaerobic sports ex
sprint
