BIO please correct this answer !

[299678]

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Q. Imagine that organisms consisted of 70 to 95% alcohol instead of 70 to 95% of water. Alcohol's specific heat is about half that of water. How would living things be different?

a) organism would be able to live in much wider range of temperature
b) Living organisms would have to be much smaller
c) systems for temperature regulation would have to be much more efficient
d) warm blooded organism would require less insulation such as fur or feathers.

the book answer is c, but I think both of b and C are correct answers. What do you think? smaller size increase surface area to volume ratio, so increase efficiency, which would help conserve heat?

 

[orthosm2021]

b) living organisms would have to be much larger (contain more alcohol) to keep the body temperature the same. Same amount of heat would increase the temperature by 2X for alcohol (when compared to water). So we need 2X more alcohol to keep the body temperature the same.

d) warm blooded organisms would require more insulation such as fur or feathers. Same concept applies here except now its heat loss. With the same amount of heat loss, the body temperature of the organism would decrease twice as much with alcohol than with water. Therefore the organisms need better insulation to minimize the heat loss.


please correct me if im wrong.

 

[Avery07]

Q. Imagine that organisms consisted of 70 to 95% alcohol instead of 70 to 95% of water. Alcohol’s specific heat is about half that of water. How would living things be different?

a) organism would be able to live in much wider range of temperature
b) Living organisms would have to be much smaller
c) systems for temperature regulation would have to be much more efficient
d) warm blooded organism would require less insulation such as fur or feathers.

the book answer is c, but I think both of b and C are correct answers. What do you think? smaller size increase surface area to volume ratio, so increase efficiency, which would help conserve heat?

I just read the quesetion and the answers before reading your resposne and I arrived at the exact reasoning you did. B and C are both correct for the reasons you listed.

 

[299678]

I guess, cell divide only when surface to volume ratio reaches at optimum level. Prior to cell division, it should extend its metabolism as much as possible to maintain the homeostasis. If there is over load, then cell divide to increase their surface to volume ratio for better efficiency.

 

[Avery07]

I guess, cell divide only when surface to volume ratio reaches at optimum level. Prior to cell division, it should extend its metabolism as much as possible to maintain the homeostasis. If there is over load, then cell divide to increase their surface to volume ratio for better efficiency.

Which only confirms B right??

 

[299678]

No only C is the correct answer. seeunmok explained it very well