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When fats and proteins are present in the duodenum, events occur that result in digestive enzymes being released into the duodenum from the pancreas - VCE - SSCE Biology - Question 15 - 2007 - Paper 1
Question 15
When fats and proteins are present in the duodenum, events occur that result in digestive enzymes being released into the duodenum from the pancreas. In addition, th... show full transcript
Worked Solution & Example Answer:When fats and proteins are present in the duodenum, events occur that result in digestive enzymes being released into the duodenum from the pancreas - VCE - SSCE Biology - Question 15 - 2007 - Paper 1
Step 1
A. signalling molecules carry messages from the duodenum to both the gall bladder and the pancreas.
Answer
This statement is reasonable because signalling molecules are known to facilitate communication between organs and tissues in the body, allowing for coordinated responses to the presence of fats and proteins in the duodenum.
Step 2
B. signalling molecules would diffuse through tissue fluid that fills the spaces between the different organs.
Answer
This statement is plausible as signalling molecules can diffuse through interstitial fluid, allowing for communication between neighboring cells and organs, supporting physiological functions.
Step 3
C. an increase in digestive enzymes from the pancreas results in an increase of fats and proteins in the duodenum.
Answer
This conclusion is incorrect. The presence of fats and proteins is what stimulates the release of digestive enzymes, rather than the enzymes causing an increase of those substances.
Step 4