Question

 

21. Multiple-Choice with only one correct answer Why does the relatively high affinity of hemoglobin for oxygen in emperor penguins enable these birds to dive below their aerobic dive limit (ADL)?

A. it ensures that bradycardia and peripheral vasoconstriction are not necessary for making deep dives
B. it leads to long term regional hypothermia and hypo metabolism during recovery from a deep dive
C. it ensures that some oxygen will not be released from hemoglobin until the pO of the blood drops to very low levels
D. it links locomotor respiratory coupling with cutaneous gas exchange (CGE)
E. it decreases blood oxygen content during hypoxemia

23. Multiple-Choice with only one correct answer What parameter (or trait) would you most likely want to use in selecting greyhounds for racing?

A. knowledge about nutrition
B. ability to digest food quickly
C. factorial aerobic scope
D. respiratory quotient (RQ)
E. postural muscle content

24. Multiple-Choice with only one correct answer Determination of the ______ for pregnant and child-carrying human females in relation to morphology and certain abiotic environmental conditions suggest that female reproductive costs mostly related to ______ may have shaped the mobility strategies of the hominin lineage and modern human foraging populations.

A. none of the answers listed
B. social interaction; peer pressure
C. cost of transport; locomotion
D. E_in ; E_out
E. aerobic scope; microbiome

Answer 1

21. Why does the relatively high affinity of hemoglobin for oxygen in emperor penguins enable these birds to dive below their aerobic dive limit (ADL)?

Answer: E. it decreases blood oxygen content during hypoxemia

During diving, the emperor penguin's oxygen use is significantly reduced, as its heart rate is reduced little low and non-essential organs are put off, thus helps in longer dives.It was seen that its haemoglobin and myoglobin are able to bind and transport oxygen at low blood concentrations thus this allows the bird to function with very low oxygen levels.

23. What parameter (or trait) would you most likely want to use in selecting greyhounds for racing?

E. postural muscle content ( Postural muscle support the skeleton and maintain balance of the body and it is found to be the most important factor for selecting greyhounds for racing ).

24. Determination of the ______ for pregnant and child-carrying human females in relation to morphology and certain abiotic environmental conditions suggest that female reproductive costs mostly related to ______ may have shaped the mobility strategies of the hominin lineage and modern human foraging populations.

Answer: C. cost of transport; locomotion

From morphological traces we expect to see changes in the locomotor frugality of our ancestors once bipedalism came into existence.