Biology Exam: Answers and Discussion!

[Reus]

I'm so cut with dropping 5 marks in MC... ugh

[SteakMan]

What could the 3 marks for the polypeptide experiment design question have been?
You couldn't mentioned controlled variables or large groups, as they specifically stated this.

I think one was for repetition of experiment, one (maybe) for sensible design that would test the hypothesis... but I'm not sure what else

Also, anyone know when vcaa or a legally allowed body actually uploads the exam online?

I wrote about repetition, getting the results and what exactly a controlled experiment was (talking about the needing the polypeptides with lys in 3rd in one and not the other etc.). Hopefully they buy it xD

[dankfrank420]

What could the 3 marks for the polypeptide experiment design question have been?
You couldn't mentioned controlled variables or large groups, as they specifically stated this.

I think one was for repetition of experiment, one (maybe) for sensible design that would test the hypothesis... but I'm not sure what else

Also, anyone know when vcaa or a legally allowed body actually uploads the exam online?

I did

- two large groups of polypeptides, one with lys in third sport and one with not-lys in third spot
- insert groups in cells
- stating which results would support hypothesis

[anat0my]

I did

- two large groups of polypeptides, one with lys in third sport and one with not-lys in third spot
- insert groups in cells
- stating which results would support hypothesis

How did you mention the insertion of the cells? It was so confusing. I said they were inserted with a liposome... ugh. Such a convoluted question...

[vox nihili]

The mods have decided to put the notes back up, so I'll whack them in the first post in a tic! Sorry about taking them down guys, just wanted to play it on the safe side

[davomac]

would you need to mention the addition of a marker on the polypeptides???

[dankfrank420]

How did you mention the insertion of the cells? It was so confusing. I said they were inserted with a liposome... ugh. Such a convoluted question...

Pretty sure it was stated in the question stem on the previous page

[Deshouka]

How did you mention the insertion of the cells? It was so confusing. I said they were inserted with a liposome... ugh. Such a convoluted question...

I said they were inserted using the viruses. Don;t know if I'll get a mark for that.

[sandrab]

How is everyone getting the answers ?

[Coralista]

I did

- two large groups of polypeptides, one with lys in third sport and one with not-lys in third spot
- insert groups in cells
- stating which results would support hypothesis

-I talked about separating the group of cells in two groups so scientists can easily identify the control group and the other group
-then inserting the exact same sequence of polypeptides (except having one group including lys in third position not the other) in both groups
-then observe which the group of cells accumulates DNA

Was a hypothesis essential to gain full marks? As well as the results

[cypherax]

How did you mention the insertion of the cells? It was so confusing. I said they were inserted with a liposome... ugh. Such a convoluted question...

From what I got out of that question, vcaa was telling us 'we got your back' in terms of the insertion, so I don't think that would've been important.
Did anyone else use fluorescent polypeptides?

[anat0my]

Pretty sure it was stated in the question stem on the previous page

No....

[anat0my]

From what I got out of that question, vcaa was telling us 'we got your back' in terms of the insertion, so I don't think that would've been important.
Did anyone else use fluorescent polypeptides?

YES USED the labelled polypeptides. Just had so much struggle with piecing it together ;n;

[Scooby]

Hey everyone, I've just had a look through the multiple choice and these are the answers I got

1.   C
2.   C
3.   A
4.   B
5.   B
6.   A
7.   B
8.   D
9.   C
10.   A
11.   D
12.   D
13.   C
14.   C
15.   B
16.   A
17.   D
18.   C
19.   B
20.   A
21.   D
22.   A
23.   B
24.   C
25.   A
26.   B
27.   A
28.   B
29.   C
30.   B
31.   D
32.   C
33.   A
34.   C
35.   D
36.   A
37.   C
38.   D
39.   B
40.   C

[cypherax]

YES USED the labelled polypeptides. Just had so much struggle with piecing it together ;n;

Almost said 'use gene probes', gosh that was tricky.
Also the question about amino acid differences, you (probably) had to relate that to mutations in DNA since amino acids cannot just change by themselves. Thought that was sneaky too.