General Thoughts: Biology (2 Viewers)

[aussienator]

Someone send PM me the paper. Much appreciated if that could happen. I will answer all queries once I know the questions.

we only got back multiple choice and options back lad, both is found in this topic (page 5,6,7) and the options topic under 'biology discussion' .

Short answers had our answers so it was taken

multiple choice is on page 6 of this discussion

 

[hecticated]

Someone send PM me the paper. Much appreciated if that could happen. I will answer all queries once I know the questions.

pretty sure someone posted the multiple choice in this thread already, and communication is in the communication thread. We don't have the rest of the paper because it was handed in..

 

[obliviousninja]

pretty sure someone posted the multiple choice in this thread already, and communication is in the communication thread. We don't have the rest of the paper because it was handed in..

Cheers. Just had a look. What is the general trend in this thread. Like which MC questions has a lot of debate? I cbs going through all these pages.

 

[aussienator]

Cheers. Just had a look. What is the general trend in this thread. Like which MC questions has a lot of debate? I cbs going through all these pages.

20 brahs thats all i need answer #20 and im happy

 

[obliviousninja]

20 brahs thats all i need answer #20 and im happy

I'm thinking D as the case study demonstrates one species only. If it did more than one and there was a comparison between the two, then maybe C. Given that there are enzymes produced at various temperatures depending on temperature, this does not align with C and the notion of narrow temperature limitation; ie the fish studied here looks quite adaptable to varying temperatures. Meanwhile the curves and their peaks demonstrate constant temperature for metabolic efficiency for the varying enzymes.

 

[obliviousninja]

Aight anymore?

 

[aussienator]

16 pretty please

 

[Maxwell]

Aight anymore?

that mother fucking pasteur experiment



were those fucking lines a lid or not?


If it was a lid, the answer was the broth wasn't boiled


or if it wasn't a lid they were exposed to air


but it was so ambiguous



ON shed some light plz

 

[obliviousninja]

@Maxwell, please specify the question, and preferably quote it in response so its easier for me.

 

[lanamohd]

Kk guys give me a heads up on my mc answers:

1. A
2. C
3. A
4. D
5. A
6. B
7. D
8. B
9. C
10. A
11. B
12. B
13. C
14. D
15. B
16. C
17. C
18. B
19. C
20. D

 

[Maxwell]

@Maxwell, please specify the question, and preferably quote it in response so its easier for me.

question 13



"the students results were different to Pasteur's..."


AND


question 16 "what is the best explanation for the successful development of transgenic species...?"

 

[obliviousninja]

16. I'm thinking B. I think its safe to rule out A and D. A reason why I don't feel like it is C, is the way the question is worded; 'successful development', the idea that DNA in the biosphere is the same, does not imply a development, as it was always existing. I don't feel like its a major factor. It's not even discussed in the syllabus either. Meanwhile, to backup B, improvements in technology have enhanced our ability to transplant favourable genes in cells, which underpins the whole concept of transgenic species, and if I had to pick between B and C, C seems like the better answer.

 

[obliviousninja]

13. C. We can easily rule out A and B as they are poor explanations. D can be ruled out as well, as the whole point of the experiment is that the bacteria which causes the cloudy-ness is caught in the s-bend. Meanwhile for C, this seems like the best explanation, as I don't see any other way that the s-bend beaker would be cloudy unless there were bacteria in it, in the first place.

 

[Maxwell]

13. C. We can easily rule out A and B as they are poor explanations. D can be ruled out as well, as the whole point of the experiment is that the bacteria which causes the cloudy-ness is caught in the s-bend. Meanwhile for C, this seems like the best explanation, as I don't see any other way that the s-bend beaker would be cloudy unless there were bacteria in it, in the first place.

<33333333333



yasssssssssssssssssssss


i did dat



with 16 i had no clue and i just made an educated guess of c lol



and i made one other stupid mistake about the quantitative/qualitative data coz i changed it fml


hopefully i can get 17-18 in the multiple choice. this year's multi was more difficult than last year's imo

last year i got 20/20 when i was practising

 

[shved]

Wait but for q16 B it mentions 'nuclear transplantation'. Isn't that for cloning only and hence not a transgenic species?

 

[Maxwell]

Wait but for q16 B it mentions 'nuclear transplantation'. Isn't that for cloning only and hence not a transgenic species?

^


my thoughts

 

[Maxwell]

bostes needs to hurry up and put out sample answers/marking guidelines


srsly it's been like 9 hours


they needa get their shit together

 

[bengosha60]

Can someone verify Q19 ? That was some weird crap


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[obliviousninja]

Wait but for q16 B it mentions 'nuclear transplantation'. Isn't that for cloning only and hence not a transgenic species?

wooooopsies. ahhhhhhhh lol forgot about that. my apologies ~

 

[Queenroot]

Can someone verify Q19 ? That was some weird crap


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It is A

B) pretty much has nothing to do with the question
C) That is true, they do, but it doesn't explain why they die easily from a rapid change than a gradual one
D) That is not true, as soon as an enzyme is out of its optimal range it WILL denature

So we are left with A) If the fish makes different enzymes at different temperatures, then the genes for them take longer to be expressed, hence with a gradual change the fish will be able to produce those enzymes as those temperatures are reached.