The Student Room Group

Stuck on my first a/s level biology homework!! - digestion?



Theabsorption efficiency of the reptile is similar to that of the mammal. Use theinformation in the table to explain why.



Mammal



Reptile


Time taken for food to pass
through small intestine /
hours

5



150


Length of small intestine /
cm

48



25


Total surface area of small
intestine / cm2

576



90


Efficiency of absorption as
percentage of food eaten

54



49





Reply 1
Why hasn't the table showed up :mad: today is not my day
Reply 2
Original post by Maya331
Why hasn't the table showed up :mad: today is not my day


Do you have a link?
Reply 3
Original post by 06shawm
Do you have a link?



Yeah, sort of:

www.thestudentroom.co.uk/attachment.php?attachmentid=178833&d...


It's the 3rd question and if you could answer 3b I'd be very grateful.
They've said using information in the table, so make sure to include figures, but basically they want something about how the reptile has a smaller SA of intestine/shorter intestine which would normally mean it absorbs less but it's got a much longer digestion time which means more time to absorb nutrients and stuff.

Quick Reply