DP Biology (last assessment 2024)
Question 18M.2.SL.TZ2.a.ii
Date | May 2018 | Marks available | [Maximum mark: 1] | Reference code | 18M.2.SL.TZ2.a.ii |
Level | SL | Paper | 2 | Time zone | TZ2 |
Command term | Calculate | Question number | a.ii | Adapted from | N/A |
a.ii.
[Maximum mark: 1]
18M.2.SL.TZ2.a.ii
Edible insects have been a part of traditional human diets in many countries. For example, crickets are insects commonly eaten in Asia and Africa. Many studies have looked at the prospects of raising insects on a commercial scale for direct human consumption as food or indirectly by feeding insects to farm animals.
One factor to consider is which organisms are most efficient at converting the feed they eat into animal protein that can be consumed. A study compared the percentage of mass that was edible in two common farm animals and in crickets.
Calculate how much more feed is required by cattle than chickens to produce 1 kg of live mass.
[1]
Markscheme
25 − 4 = 21kg «more required for cattle»
Must state unit kg.
