how do you get to this answer?
- Two marks for correctanswer of 29545-30455;
- One mark for incorrectanswers in which candidateclearly divides measuredwidth by actual width;
Magnification question jun 12 biol5 Watch
- Thread Starter
- 19-02-2016 18:12
Little Tail Chaser
Offline17ReputationRep:TSR Support TeamClearing and Applications Advisor
- TSR Support Team
- Clearing and Applications Advisor
- 19-02-2016 23:15
The question relies on you physically measuring the diagram with a ruler, so if you're getting the incorrect answer with the correct working then it's because you're viewing the question at the wrong scale.
The size of the sarcomere in the diagram is equal to the size of the real sarcomere (2.2µm) divided by the magnification.
Rearranged, magnification = image size / real size, as it says in the mark scheme.
Remember to use the same unit of length when doing the calculation. 1mm = 1x10^-3m, 1µm = 1x10^-6m.
Hope that helped