During a 3-minute boxing round, identify which energy system is the predominant system being used to fuel the specific activity described below:

ATP/PC - First punch thrown within 3 seconds of starting the round

Anaerobic - A continuous flurry of jabs and fast moves lasting about 45 seconds after 1.5 minutes into the round

Aerobic - Right at the end of 3 minutes while moving around the ring

Aerobic - During the 1-minute rest between rounds

Phosphagen can provide energy for about the first 3 to 10 seconds of high intensity and quick actions. After this time, (depending on the amount of oxygen available) anaerobic or aerobic respiration would take over. In this continuous boxing session, the more probable source of ATP would be anaerobic assuming that the demand for energy exceeds the normal time for aerobic respiration to take over. Anaerobic would last for about 10 to 90 seconds of performance duration. At rest, it would be aerobic respiration taking over.

as the gila monster consumes the eggs or young of the desert cottontail and gambel's quail, thus its main food supply is only accessible for a restricted time duration every year. however, for this, the gila monsters exhibit three adaptations, which elevate their survival rate in the desert condition.  

first, is that they possess huge bodies, and can consume greater concentrations of food during a small period. secondly, they require to feed infrequently as they can accumulate fat in their tails. ultimately, their rate of metabolism is very low, so that they can burn their reservoirs of fat gradually.  

during the process of dna replication, brdu can replace thymidine and incorporate into the newly synthesized dna, cell proliferation thus can be reflected in the extent of brdu incorporation.