The student wants to explain how pineapple extract increased the growth rate of P javanicus. Which choice most effectively uses relevant information from the notes to accomplish this goal?
A Researchers in Indonesia recently found that adding pineapple extract to fish food increased the growth rate of P, javanicus.
B An enzyme in pineapple extract, bromelain increased the growth rate of P javanicus by enhancing the hydrolysis of ingested proteins, in turn affecting the fish’s total food consumption.
C According to the researchers, the growth rate of R javanicus was affected not by food consumption but by feed utilization efficiency
D The enzyme bromelain enhanced P. javanicus’s absorption of ingested proteins increasing the grovdyrate of fish fed pineapple extract.
The correct answer and explanation is:
The correct answer is B: An enzyme in pineapple extract, bromelain increased the growth rate of P. javanicus by enhancing the hydrolysis of ingested proteins, in turn affecting the fish’s total food consumption.
Explanation:
This option provides a clear, detailed explanation of how pineapple extract works, specifically focusing on the role of bromelain, the enzyme in pineapple extract. Bromelain enhances the hydrolysis of ingested proteins, which means it helps break down proteins into smaller, more digestible components. This improved digestion likely boosts the fish’s ability to absorb and utilize nutrients from the food it consumes.
By focusing on this enzyme’s action, the explanation directly connects the pineapple extract’s effect to the growth rate of P. javanicus. It describes the mechanism behind the increased growth rate (protein hydrolysis), showing a cause-and-effect relationship between the pineapple extract and the fish’s growth. Additionally, the mention of food consumption ties the biochemical effect to a broader physiological outcome, supporting the growth enhancement.
Other options lack this level of specificity or do not directly link pineapple extract to the growth rate improvement. For example:
- A only mentions an increase in growth rate without explaining how or why it happens.
- C references feed utilization efficiency but does not detail the specific biochemical action or mention the pineapple extract.
- D is partially correct, but it does not fully explain the process by which bromelain enhances the absorption of proteins.
Thus, option B best incorporates the relevant information from the notes to explain the mechanism by which pineapple extract increases the growth rate of P. javanicus.