Please answer the 3 questions, please provide brief explanation. Urgent, thanks.
12. Multiple-Choice with only one correct answer What means would be used to reduce oxygen uptake when an oxygen regulator experiences a temporary hyperoxic condition?
A. increase hemoglobin and red blood cell levels
B. increase ventilation and circulation rate
C. increase myoglobin in the blood
D. decrease ventilation and circulation rate
E. mutate its hemoglobin so it has a higher P50
13. Multiple-Answer with 2 correct answers What combination of factors enable plants to rely solely on diffusion for gas exchange?
A. they have a relatively high level of metabolism due to their ectothermic and immobile nature
B. only trees that are Ents cannot rely on diffusion for gas
C. tissue air space distance from high to low gas molecule concentration is long because leaves are generally very thick
D. plants do not need to worry about scaling relationships between metabolic rate and mass
E. they have a high surface to volume ratio due to the fractal characteristic of their branching and leafing
each part of the plant takes care of its own gas exchange needs via air spaces and gas exchange organs that lie close to living tissue
14. Multiple-Answer with 2 correct answers What combination of approaches would be best to use in a natural setting to determine differences in the energy budgets of uninfected lizards and lizards infected with malaria?
A. heat generation using an infrared detector
B. stable isotope turnover with doubly labeled ( 18O and 2H) water in the lab or in the field
C. field observations of the time spent per activity
D. respirometry while at rest and during mating in the lab
E. bomb calorimetry of lizard leg muscles
Felt great to answer. Good luck!
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