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6 Comments

1. April 27, 2015 at 4:10 pm

   2011 int 2 Q8b (i)

2. authorApril 29, 2015 at 7:31 am

   Hi Lois

   To calculate the answer you need to first recognise that 170 calories is 8.5% of the total.

   The total number of calories must therefore be 170/8.5% (i.e. 170/0.085)

   This will give you a total of 2000 calories

   Hope this helps, let me know if not!

   Mr. Gallagher

3. May 3, 2015 at 6:45 pm

   Specimen Paper Q13a part i and ii

4. authorMay 5, 2015 at 7:30 am

   Hi Connor

   For 13a) i) The reason that it is expressed as a percentag is because the starting population is different therefore a percentage has to be used for a fair comparison to be made

   ii) Total number of birds in 2009 = 300 million (from the passage)
   Total number of Meadow Pipit = 12.9 million (from the table)
   Therefore 12.9/300 x 100 = 4.3%

   Hope this helps

   Mr. Gallagher

5. May 11, 2015 at 3:52 pm

   When describing the effect of solutions on plant and animal cells, when do we use the terms turgid, flacid and shrunken?

6. authorMay 13, 2015 at 6:57 am

   Turgid = When the plant cell has gained water (from being in a hypotonic solution)
   Flaccid = When the plant cell has lost water (from being in a hypertonic solution)
   Shrunken = When an animal cell (e.g. red blood cell) has lost water