Happy to talk to you about the individual questions, as I put together the ATARNotes answers for Biology.
Hi, thanks for your time!
I have a few individual questions where my answers coincide with AN answers and they're all from the last experimental design question
I have tried to write exactly what I have written in my exam script as I know that examiners care about expression.
11bWhat I wrote:1. Temperature that the test tubes were subjected to
2. Amount of algae in each test tube
3. Time given for each group of test tubes with algae to photosynthesise before a colour change was observed
number one and two are listed on the answers the third one is not, but more bizarrely, this is the question where I received 3/6 when the mark is doubled. They're controlled variables... so how can one examiner give 1/3 and the other 2/3 when we are only given one line per variable?
11CIV: type of algae (red or green)
DV: rate of photosynthesis as denoted by time taken for indicator to switch colour
I was awarded 2/4 (again doubled score). But these were the exact words I used to answer the question? Are either of them incorrect?
11f- rate of cellular respiration in red algae is lower than in green algae
- Sample size is too small for the results to be conclusive even if it passes the first test
I was awarded 0 for this. The first answer is on the atarnotes solutions the second now was not, either way I was awarded 0/4...
On top of these there are four instances where the examiners marks have not coincided, for me this isn't an issue because I'm aware that my expression could have been accepted by one examiner only. But for the above questions, controlled variables, dependent/independent variables, for the most part we were given one line of writing and I can't imagine examiners disagreeing on it. Correct me if I'm wrong. Once again thank you for your time.