Name 8. Oxygen consumption (VO-) increases with speed during constant speed terr
ID: 146395 • Letter: N
Question
Name 8. Oxygen consumption (VO-) increases with speed during constant speed terrestrial locomotion such as walking. Researchers measured VO2 in an eight-legged ectotherm, the ghost crab (Ocypode quadrata) at different walking speeds (data below). a. Calculate the cost of locomotion per unit distance in ml O(g'm) when the walking speed is both 0.05 m/s and 0.20 m/s. Be sure to include units with your answer and be careful with the conversion between second (s) and hour (h). The curved lines indicate margins of error A 1.25 1.00 0.50 0.25 0.00 0.00 0.05 0.10 0.15 00 0.25 0.30 Walking Speed (m/s) b. At what speed should the crab walk to minimize its cost of transport? is the approximate aerobic expansibility of this species of crab? Assume the VO2 min is when the animal is at rest. Homework #1 Posted August 2018Explanation / Answer
8 a) At the walking speed of 0.05m/s the Average oxygen consumption is nearly 0.25ml/g/h
converting the hours into minutes and seconds
At walking speed of 0.5m/sec the value of oxygen consumption is 0.25ml O2/g/h
In 1 hour= 0.25
In 1 min= 0.25/60= 0.0041
In 1 sec = 0.0041= 0.0041/60= 0.0000683
= 683*10-7 ml O2/seca
At 0.20 m/s the value on the Y-axis is around 0.75 ml O2/g/h
In 1 min it will be= 0.75/60 =0.0125
In 1 sec it will be = 0.0125/60 = 0.0002083 = 2083*10-7 ml O2/g/sec
b) The crab should walk at the speed of 0.5m/sec to consume less oxygen.
c) Aerobic expansibility is defined as the ratio of Vmax O2 / Resting rate of O2 Consumed.
VO2 minimum= at rest
ratio= VO2 max/VO2 at rest= Vmax is 0.75ml O2/g/h/ 0.125= 6
Thus the aerobic expandibility will be 6.
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.