Can you please solve all these questions. thanks in advance! )deer mice use a gr
ID: 219633 • Letter: C
Question
Can you please solve all these questions. thanks in advance!
)deer mice use a greater proportion of their metabolic energy to maintain body temperature. B) deer mice use a greater proportion of their metabolic energy to seeking food. C) deer mice use a greater proportion of their metabolic energy for hibernating D) deer mice use a greater amount of metabolic energy for growth Arery Kay Cool blood-Heat trenler 23) What does the difference in temperatures between arteries and veins in the dolphin's fin (shown above) indicate? A) The fin needs to be kept at the same temperature as the main body of the dolphin so the fins do not freeze in water. B) Minimizing the temperatures between the fin and the main body of the dolphin means the dolphin will lose less heat. C) The arterial blood is always cooler in the main body, compared to its temperature in the fin of the dolphin. D) The dolphin's fin will function even when their temperature falls below freezing. 24) Giraffatitan brancai is a gigantic sauropod dinosaur believed to have weighed at least 40 metric tons. This dinosaur is hypothesised to have a systolic arterial pressure greater than or equal than 700 mm Hg. Based on this information you might suppose this animal to have. A) an incredibly long neck of at least seven or more meters. B) enormously long legs at least 10 or meters in length. C) a rather short neck of about one meter in length. D) There is not enough information to speculate anything about why this animal had such high blood pressure. 25) The air pressure on Mount Everest in the Himalayas, is about 30% of the air pressure in Miami Beach, which is about sea level. Given that the air pressue in Miami Beach is 760 mm Hg and oxygen makes up 2 1% ofthe air in Miami Beach, what is the percentage of oxygen and the partial pressure of oxygen on Mount Everst, respectively? /O A) 17.496, 21 mm Hg B) 17.4%; 48 mm Hg C) 2194; 21 mm Hg D) 2196, 48 mm Hg Ouf usion constant Differnce parti d solubility of gas tide of barier to diffusion x A x (Pa-P.) Rate of ,k diffusion Area for thickness of barrier to diffusion) 26) Fick's law of diffusion (shown directly above) describes the factors that influence the diffusion of respiratory gases across biological membranes like gills and lungs. Natural selection is MOST likely to act upon which variable in Fick's law? A) A B) D C) k D) P2 - Pl ht 27) A Prjevalsky's wild horse's red blood cell in an artery of the right front leg is on its way to deliver oxygen to a cell in that same leg's toe. To travel from the artery to that leg's toe and then back to the left ventricle, this red blood cell must pass througlh A) one capillary bed B) two capillary beds C) three capillary beds D) four capillary bedsExplanation / Answer
24. Correct answer is (A) cause it requires tremendous amount of blood pressure to pump blood to a height of 7 meters, which is the length of the neck of the dinosaur.
25. Correct answer is (D).
The percentage of oxygen in air remains same whether it is sea level or high altitude. So, the percentage of oxygen on Mount Everest is 21%
Now, calculating the partial pressure:
Air pressure of Mount Everest= 30% of air pressure in Miami
= 30/100* 760 mm Hg
= 288 mm Hg
Partial pressure of oxygen at Mount Everest= % of oxygen in air* air pressure at Mount Everest= 21/100* 288 = 47.88 ~ 48 mm Hg
26. The correct answer is (A). A which is area for gas exchange is directly proportional to the rate of diffusion, hence directly influences the rate of diffusion, depending on the anatomy of the organism.
27. The correct answer is (D).
The blood flows through the body: left ventricle - systemic circulation- right atrium- right ventricle- pulmonary circulation- left atrium- left ventricle.
Now, the systemic circulation has 3 parts: coronary circulation, renal circulation and hepatic portal circulation. So, here the red blood cell passes through 3 capillary beds. Further, it passes through another capillary bed when it goes into the pulmonary circulation; making it a total of 4 capillary beds.