Bio Question from actual 1990 DAT

[dental13]

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among mammals there is a noticeable relationship between body size and metabolic rate. Which of the following series best illustrates this relationship, going from lowest metabolic rate to highest metabolic rate?

1.mouse-man-dog
2.elephant-horse-man
3.rabbit-man-elephant
4.mouse-dog-man
5.mouse-man-elephant

I don't remember neither cliff nor KBB going over this... or I totally forgot.
The answer is 2. I just guessed bigger= higher metabolic rate, which was incorrect.

anyone can explain this?

 

[MrSummerlin]

among mammals there is a noticeable relationship between body size and metabolic rate. Which of the following series best illustrates this relationship, going from lowest metabolic rate to highest metabolic rate?

1.mouse-man-dog
2.elephant-horse-man
3.rabbit-man-elephant
4.mouse-dog-man
5.mouse-man-elephant

I don't remember neither cliff nor KBB going of this... or I totally forgot.
The answer is 2. I just guessed bigger= higher metabolic rate, which was incorrect.

anyone can explain this?

I learned in Bio 2. Bigger mammals have slower metabolic rates, and smaller mammals have faster metabolic rates. It's as simple as that.

 

[dental13]

Simple
Thanks

 

[HappyDentist90]

among mammals there is a noticeable relationship between body size and metabolic rate. Which of the following series best illustrates this relationship, going from lowest metabolic rate to highest metabolic rate?

1.mouse-man-dog
2.elephant-horse-man
3.rabbit-man-elephant
4.mouse-dog-man
5.mouse-man-elephant

I don't remember neither cliff nor KBB going over this... or I totally forgot.
The answer is 2. I just guessed bigger= higher metabolic rate, which was incorrect.

anyone can explain this?

Go to Destroyer page 310 and look at number 341. You should have a little note there 😉

 

[TheDentist16]

I learned in Bio 2. Bigger mammals have slower metabolic rates, and smaller mammals have faster metabolic rates. It's as simple as that.

Correct. The reason why it's answer # 2 is because bigger animals have slower metabolic rates, while smaller mammals have higher rates.

 

[rocky90]

I would rather say that the bigger the size the higher the bmr. It only reverses when you are looking at /kg weight. Perhaps you missed that part on your question.

 

[chill45]

among mammals there is a noticeable relationship between body size and metabolic rate. Which of the following series best illustrates this relationship, going from lowest metabolic rate to highest metabolic rate?

1.mouse-man-dog
2.elephant-horse-man
3.rabbit-man-elephant
4.mouse-dog-man
5.mouse-man-elephant

I don't remember neither cliff nor KBB going over this... or I totally forgot.
The answer is 2. I just guessed bigger= higher metabolic rate, which was incorrect.

anyone can explain this?

Worst case scenario on this question just use process of elimination. 3, 4, and 5 all go from smallest to largest. 1 goes from smallest to largest to middle. 2 is the only one that goes from one extreme to the other without another answer duplicating that specific trend. With your initial guess 3, 4, or 5 all would have worked.

 

[dymm]

I remember learning about this allometry stuff in physiology. This question can also be tweaked by bringing in factors (other than body size) that affect metabolic rate (MR):

1. Temperature (direct/positive relationship with MR)
2. Endotherms (of a given size) have much higher metabolic rates than ectotherms of an
equivalent size.
3. Endocrine effects such as thyroid hormone (hypothyroidism=decreased MR; hyperthyroidism=increased MR)
4. Age (inverse relation with MR; i.e. old people have lower MR)


I sensed a discrepancy between what Slyguy and rocky90 were saying so I read up on this website: http://courses.washington.edu/biol462/2005 met II.pdf
Scroll down to III. It explains the difference between mass-specific metabolic rate (which is what slyguy and mrsummerlin were talking about I think) and whole animal metabolic rate (which is what rocky was talking about).

Sorry to beat the dead horse. Hope I was able to explain you original question. Good luck!