multiple choice answers (1 Viewer)

[dolbinau]

The answer is C:burn:

Organism's temperature lower than cage = homeostasis maintaining low temperature. Nuff said

But D is factually the correct observations for an ectotherm. (I did select C)

 

[JosephW]

But D is factually the correct observations for an ectotherm. (I did select C)

Based on the question, it was a science class observing an organism. I dont know about your school but I dont think school's have the resources to 'observe' an increased metabolism. On the other hand, I can not see anything wrong with C. I guess we will just have to wait and see.

 

[dolbinau]

I feel the same way. But I don't think the BOS would have a trick like that. I do hope it's C though lol.

 

[Takuto]

The answer is C:burn:

Organism's temperature lower than cage = homeostasis maintaining low temperature. Nuff said

how does that prove anything.. it could be an ectotherm

as cage rises, ectotherm begins to rise

but ectotherm is still lower than the cage

btw, the ectotherm could be like 1 degree below the cage. its a shit conclusion to make lol

also remember, the observation is already correct.. read the question again. you dont need to question the validity of the observation.. so the fact that you cant observe metabolism isnt important

it only asks you to find the correct conclusion that matches the observation

 

[j-3-s-5]

This could be way off...

but. With ectotherms if environment rises, our body temp starts to rise but then receptors detect it and initiate a response to lower it. although our metabolism decreases with increased temp, so i'm probably wrong anyway lol. just a thought.

 

[alez]

yeah, thats what i thought too. keeping body temp lower than the environment - endotherm
but i didnt know anything bout ectotherms and metabolism
hooray for the incompetence at my school

 

[Takuto]

source 1 = ‘when ectotherms increase their body temperature using the external environment, their metabolism increases as well’ (Grolier,1996). ...

source 2 = Ectotherms depend largely on external sources of heat, such as solar radiation. As the environmental temperature increases, the animal's metabolic rate will increase. Lizards, fish, and amphibians are examples of ectotherms.

source 3 = Attached: Graph of metabolism of an ectotherm

lol

 

[alez]

ok cool. thanks for explaining it
i seriously learnt nothing in bio. except why the sky is blue
thank god for bos

 

[WantToDoBetter]

source 1 = ‘when ectotherms increase their body temperature using the external environment, their metabolism increases as well’ (Grolier,1996). ...

source 2 = Ectotherms depend largely on external sources of heat, such as solar radiation. As the environmental temperature increases, the animal's metabolic rate will increase. Lizards, fish, and amphibians are examples of ectotherms.

source 3 = Attached: Graph of metabolism of an ectotherm

lol

I don't doubt the well researched facts you presented that should be common knowledge to everyone in the biology course.

My arguement is in the wording of the question as both C, D are factually correct.

 

[Takuto]

I don't doubt the well researched facts you presented that should be common knowledge to everyone in the biology course.

My arguement is in the wording of the question as both C, D are factually correct.

can you explain why c is correct, and not an ectotherm?

ectotherms also have their temperature lower than the ambient environment lol

 

[WantToDoBetter]

As the environmental temperature increases, the animal's metabolic rate will increase.

Meaning that the ectotherm increases with amient temperature. As the animal is in a cage it cannot regulate its body temp by burring or finding shade ect. It's temp will then have to increase with the temp of the cage. So for an organism to have a lower temperature it must be regulating it its self.

 

[Takuto]

You posted it.

lol, what

c didnt even say anything about metabolism...

 

[Takuto]

So for an organism to have a lower temperature it must be regulating it its self.

no, a lower temperature doesnt mean its an endotherm

ectotherms always have temperatures lower than the 'cage'

it takes a while for ectothermic temperature to start to increase, and even then, it will not reach or surpass the ambient

 

[russianROULETTE]

So for an organism to have a lower temperature it must be regulating it its self.

C is only correct if we know that the temperature of the cage is over their normal temperature (i.e. 37 for mammals). an answer based on an 'if' is clearly not an answer when there is another answer that is correct no matter what (the metabolism part, i believe the BoS would assume that as common sense).

therefore, D.

 

[PantherZ]

The answer is C:burn:

Organism's temperature lower than cage = homeostasis maintaining low temperature. Nuff said

The evidence given is inconclusive. Homeostasis operates to maintain the organism's core temperature at a certain point.

You seem to assume cage temperature is relatively high.

What if the cage temp is low? Shouldn't homeostasis work to maintain it at a higher temperature?

Hence, the BETTER, more CONCLUSIVE answer would be D.

 

[DA15Y]

well i answered D, i mean u wouldnt know what the cage temp is anyway, coz endotherm's body temp should stay the same no matter what the environment temp is, but on the other hand, ectotherm's body temp changes with the environment temp.

by the way, did anyone know who Frank Macfarlane Burnet was? We never even learn about him in class!!!

 

[Takuto]

well i answered D, i mean u wouldnt know what the cage temp is anyway, coz endotherm's body temp should stay the same no matter what the environment temp is, but on the other hand, ectotherm's body temp changes with the environment temp.

by the way, did anyone know who Frank Macfarlane Burnet was? We never even learn about him in class!!!

hehe, dw, they do that on purpose

ur not meant to learn about him.. hes only on the dot point heading

ur supposed to eliminate the other scientists, they make it obvious for you

 

[PantherZ]

hehe, dw, they do that on purpose

ur not meant to learn about him.. hes only on the dot point heading

ur supposed to eliminate the other scientists, they make it obvious for you

They had it in 2 previous exam papers. Looks like someone didn't do many past papers.

 

[syriangabsta]

well i answered D, i mean u wouldnt know what the cage temp is anyway, coz endotherm's body temp should stay the same no matter what the environment temp is, but on the other hand, ectotherm's body temp changes with the environment temp.

by the way, did anyone know who Frank Macfarlane Burnet was? We never even learn about him in class!!!

D would be correct.

let the animal be a snake...

temp increases. what does snake do to reduce temp? hmm less active? hides in shade?

oh wait, how tf can it be less active in a cage!? and hide in the shade..of a cage? :S

so, it has nothing to do but sit on its ass and absorb the dam heat. so therefore its temp increases.

has to be D.


EDIT: should have paid more attention to your syllabus lol. dot point 5 i think of SFBH..

 

[cccclaire]

It's simple.

If you take a snake out of a fridge and put it in an oven, and measure it's temperature 1 minute later it will still be lower than the temperature of the oven.

Therefor C is incorrect.