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Biology help with this questions

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someone help with that question pleaseeee. The mark scheme is too ambiguous
(edited 6 years ago)

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Reply 1
Avatar for Zaki_
Zaki_
10
it says file not found when i paste the link o:
Screen Shot 2017-07-02 at 18.44.03.png
Original post by chemistry002
Attachment not found


someone help with that question pleaseeee. The mark scheme is too ambiguous


^^^^^ thats the first bit to it
Original post by Zaki_
it says file not found when i paste the link o:


does it work now???

btw i lurvv your dp
The file isn't showing
basically AQA As Paper 2, specimen 2, Q8
Screen Shot 2017-07-02.jpg.png137.8KB
Screen Shot 2017-07-02 at 18.44.03.png37.3KB
can you see the attachment now??
Reply 7
Avatar for S.G.
S.G.
22
Original post by chemistry002
can you see the attachment now??


Rate of hydrolysis will have units g/s so that's how you get rate. The thing is 5 minutes long.
Original post by ThatMadClown
Would you not just plot the graph? Put temperature on the x axis and mass on the y axis


naaa mate that aint processed data
(edited 6 years ago)
Reply 9
Avatar for S.G.
S.G.
22
Original post by ThatMadClown
Would you not just plot the graph? Put temperature on the x axis and mass on the y axis


Rate of hydrolysis against temperature. It has to be rate due to biology reasons I can't remember.
Reply 10
Avatar for S.G.
S.G.
22
Original post by chemistry002
Ohhh im soo dumb. I don't know why i do a-levels. Okay but how would i calculate the rate of hydrolysis? I assumed it was g s-1??

i swear down new spec makes me suicidal

5 minutes is 300 seconds. Divide each mass by 300 to get rate in g s-1.
Original post by SGHD26716
Rate of hydrolysis will have units g/s so that's how you get rate. The thing is 5 minutes long.


would the first one be

48/300

because 5x60= 300 secs
Original post by SGHD26716
Rate of hydrolysis against temperature. It has to be rate due to biology reasons I can't remember.


my g is going to get an A* in biology and become a doctor.

Thank you xx
Reply 13
Avatar for S.G.
S.G.
22
Original post by chemistry002
would the first one be

48/300

because 5x60= 300 secs

0.48 g of protein were hydrolysed in 300 seconds.

So, rate of hydrolysis 0.48/300 = 0.0016 g s-1
Original post by chemistry002
would the first one be

48/300

because 5x60= 300 secs


Yes. Although the unit below per is left blank so I'm not sure if it's necessary to have it per second and not per minute, for example. Guess you'll find out when you see the markscheme.
(edited 6 years ago)
Reply 15
Avatar for S.G.
S.G.
22
Original post by chemistry002
my g is going to get an A* in biology and become a doctor.

Thank you xx

Ha. Thanks. I have applied for medicine but biology was so hard.
Original post by SGHD26716
Ha. Thanks. I have applied for medicine but biology was so hard.


i want to apply for med next year. Everyones saying biology was hard so don't worry about it too much. Did you get and if so where?
Reply 17
Avatar for S.G.
S.G.
22
Original post by chemistry002
i want to apply for med next year. Everyones saying biology was hard so don't worry about it too much. Did you get and if so where?


One offer. Liverpool. I need 3 A but don't have a clue how I did with biology and hoping I did well enough in chemistry. Just depends on grade boundaries now.
Original post by SGHD26716
One offer. Liverpool. I need 3 A but don't have a clue how I did with biology and hoping I did well enough in chemistry. Just depends on grade boundaries now.


yoo i want to go liverpool or southampton but lets see how AS goes (i have internal exams in a week)
Reply 19
Avatar for S.G.
S.G.
22
Original post by chemistry002
yoo i want to go liverpool or southampton but lets see how AS goes (i have internal exams in a week)


Good luck. My tip would be to stay composed in exams and don't stress too much.

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