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Lab Report Biology HL

Hi!

I'm having a bit of trouble with my lab report on enzyme activity. could anyone who is in IB2 or who has graduated help me? I'm not sure what is enough!

______________
May '08
Swedish A1 HL
English A2 HL
Biology HL
Economics SL
Maths Studies
French B SL

Reply 1

andy_cole2

enough what....more detail might help anyone who could help...

Reply 2

Glow

Yeah, enough what? Give us a little more info, we're glad to help.

Reply 3

johannski

hmm hard to explain without you knowing the lab...

ok never mind, just help me with this question then: an apparatus which could measure the volume in a measuring cylinder more accurately than by eye? a specific example please!!

luv //J.
______________
May '08
Swedish A1 HL
English A2 HL
Biology HL
Economics SL
Maths Studies
French B SL

Reply 4

Glow

Hrm, maybe one of those erhm, what do you call them, electronic pipette-things.

Reply 5

King

Try a pressure sensor meter.
You can measure the pressure of the gas produced when an enzyme works. As the reaction rate increases (due to increasing temperature for example), more gas is produced thus the pressure increases.
This is a good method to use on an enzyme lab (or any other lab involving reaction rate)
Good luck!

Reply 6

dan

Measure the radius and the height then use the volume of a cylinder equation!! :p:

As you can see, I'm a physicist :wink:

Reply 7

HMSChocolate

danglenister

Measure the radius and the height then use the volume of a cylinder equation!! :p:

As you can see, I'm a physicist :wink:

then the accuracy of the volume would depend on teh accuracy of your measurements which, in the end, would be measured with a ruler, thus by the eye anyway, so that kind of kills the point...

Reply 8

dan

ruler measurements are more accurate (0.05cm) so would be easier to measure by eye.

Reply 9

HMSChocolate

yeah but I was under the impression that the question requests you to use something other than the eye.

Reply 10

johannski

thanks a bunch all of you! one more question though! should I explain aout how enzyme acitivtity works? like with the lock/key model and induced fit model?