ch3 bioenergetics of exercise and training Flashcards
bioenergetics def
the flow of energy in a biological system
bioenergetics is primarily concerned with…
the conversion of carbohydrate, protein, and fats into biologically usable forms of energy
the breakdown of large molecules into smaller molecules associated with the release of energy is called…
catabolism
the synthesis of larger molecules from smaller molecules can be accomplished using using energy from…
catabolic reactions
they sythesis of larger molecules from smaller molecules is called…
anabolism
exergonic reactions are
energy releasing reactions and are generally catabolic
endergonic reactions require energy and include…
anabolic processes and muscle contraction
metabolism is the…
total of all the catabolic /exergonic and anabolic / endergonic reactions in a biological system
energy derived from catabolic / exergonic reactions is used to…
drive anabolic / endergonic reactions through an intermediary molecule, adenosine triphosphate (ATP)
ATP allows the transfer of energy from ….
exergonic to endergonic reactions
ATP is composed of…
adenosine
3 phosphate groups
adenosine is the combenation of…
adenine (nitrogen containing base)
ribose (five carbon sugar)
the breakdown of one molecule of ATP to yield energy is known as…
hydrolysis (because it requires one molecule of water)
myosin ATPase is the
enzyme that catalyzes ATP hydrolysis for crossbridge recycling
calcium ATPase is the enzyme that
catalyzes ATP hydrolysis for pumping calcium into the sarcoplasmic reticulum
the energy released primarily from ATP and secondarily from ADP results in…
biological work
ATP is classified as a …
high energy molecule
muscle cells store a —– amount of ATP
limited
what are the three basic energy systems to replenish ATP?
phosphagen system
glycolysis
oxidative system
anaerobic processes…
do not require the presence of oxygen