On last year's exam its asking about "explain why the data was recorded for 4 minutes no just 1" (question 11c if anyone is wondering)
in the marking scheme it says to establish a baseline, but i am not sure whether my answer would be accepted;
I wrote:
"To see whether the results changed over time, waiting until they plateau"
they started to plateau from 2 minutes onwards
I am not a fan of vcaa's answer here.
I think that the reason should be to establish an accurate baseline.
Just one minutes would give you a baseline, but by waiting 4 minutes until the recordings stabilise, you get an accurate baseline/control.
When given a diagram of a protein's secondary structure, how do you tell the difference between a random coil and an alpha helix? I always confuse them visually bc of the spiral shape common to both.
I don't think the vcaa will give you a diagram where a coil isn't a alpha helix.
I am fairly certain that for the exam, any diagram of a coil in a protein will be an alpha helix.