Not exact matches
Very large animals have more «fast twitch» muscle fibers needed during a sprint and can in theory accelerate for
longer periods, but those tissues soon run
out of oxygen and thus reach max performance
long before supermassive creatures ever reach their theoretical maximum speed.
We know that bacterial cells have different ways
of metabolizing energy in
oxygen - rich environments, but for the
longest time we couldn't figure
out how they were doing it when
oxygen is difficult to access.»
Kourosh Kalantar - Zadeh, an engineer at the Royal Melbourne Institute
of Technology in Australia, and his colleagues built plastic capsules about 2.5 centimeters
long — about as
long as a Jolly Rancher hard candy — that sniff
out carbon dioxide, hydrogen and
oxygen gas molecules in the gut.
Mangrove rivulus, which can live
out of the water for extended periods
of time (days or weeks, as
long as the conditions are moist), uses its specialised jumping technique when water has low
oxygen concentrations or high levels
of hydrogen sulphide, or to escape predators and search for terrestrial prey such as crickets.
A decrease in temperature means that the hydrogen and
oxygen atoms
of the water no
longer have enough energy to bounce
out of the six - sided pattern they naturally nestle into.
Because lower - intensity exercises have greater access to
oxygen, fats, carbohydrates and even proteins for synthesising ATP for fuel, it can produce practically unlimited energy for
long periods
of time — just not very quickly, meaning sprinting is
out.
The generation
of ATP energy by the aerobic energy system can be continued as
long as
oxygen is available to your muscles and your food energy supplies don't run
out.
What to make, then,
of Secretary Duncan's widely heralded concession that testing is «sucking the
oxygen out of the room in a lot
of schools» and his offer to states
of a year -
long delay in making test scores part
of their evaluation systems?
Sometimes in these situations a dog which has some heart defect may get so excited that the heart no
longer efficiently pumps blood around the body and the brain gets starved
of an adequate
oxygen supply for a short period
of time causing him to pass
out; after passing
out the excitement disappears immediately and the heart resumes pumping blood normally.
All Young Again kibble is packaged in tough foil bags that seal in the freshness and keep
out moisture and
oxygen for a
long shelf life
of 18 months.
He went without
oxygen for a
long time before intubation, and the doctors did not hold
out much hope
of survival, and if he did survive, they thought there would be brain damage.