Ial biology unit 6 may 2018

This is how I write it-
1. State the independent variable
2. State the dependent variable.
3. State two variables that should be controlled and how they are controlled. Also their effects if not controlled.(invalid results)
4. How to carry out the method.
5. Mention a suitable timescale and then method of measuring the dependent variable.
6. Repeats and mean
Hope it helps!

Hello i wanted to ask how to write the answer for question 3 10mark to get maximum marks i have been looking at the marking scheme and didn't seem to get it, if anyone has a an answer to any question that relates to question 3???

Check out the examiners reports! They are really helpful.

Hey guys, how do you control the temperature in a field-based experiment?

Hey guys, how do you control the temperature in a field-based experiment?

You can't control the temperature but I think if you had to I would write something like measure the temperature using a thermometer and carry out the experiment in areas with the similar temperature.

How do you extract the juice from the fruit.

squeezing..like an orange..or blend and filter out the pulp for veggies

you can mention measuring temperatures periodically throughout the day to determine if the varying temperatures have much effect on investigation

How was the paper guys? Was the first question supposed to be a Spirograph or a respirometer?

I guess the paper was not bad. Lol the first question messed me up. I used a spirometer, wbu?

I wrote a messed up ans, I got oxygen uptake by using respirometer and described that, then at the last line I added a spirogram to get breath rate to get minute ventilation, i don’t know if they’re gonna accept or reject because I put two answers, and if I already wrote about spirometer then tidal volume could be calculated from there itself instead of respirometer , do you think they’ll give me marks?

Its difficult to say.... we might get a few marks for saying the dependent variable and independent and also marks for saying repeats. But I consulted with a friend, apparantly you observe the locust under a microscope in a thermostatically controlled room and you measure rate of contraction and relaxation of the abdomen.