edexcel ial biology unit 1 june 2018 discussion and prediction

http://www.physicsandmathstutor.com/biology-revision/a-level-edexcel-ial/unit-1/

guys check these notes please.
THESE NOTES ARE PERFECTO

Reply 23

Original post by IGCSEsurvivor

permeability of beetroot
effect of enzyme activity and the effect of different concentrations on rate of rxn
test for vitamin c
daphnia experiment

these are all the experiment you need. Learn them by hard so that you can score that 4 or 5 marks question

THANKS

Reply 24

barbruh

OP

11

Guys, what does "standardization of extract" in the DCPIP-Vitamin C experiment mean? I have seen that term a lot in mark schemes...

Reply 25

larissa67

9

Original post by barbruh

Guys, what does "standardization of extract" in the DCPIP-Vitamin C experiment mean? I have seen that term a lot in mark schemes...

i think this means you have to state how much extract you’re using, eg. 1cm of 1% DCPIP
someone correct me if i’m wrong but i think that’s what it means

Reply 26

larissa67

9

Original post by larissa67

i think this means you have to state how much extract you’re using, eg. 1cm of 1% DCPIP
someone correct me if i’m wrong but i think that’s what it means

*1cm3

Reply 27

Zxnxb

Does anyone have any idea of what questions might come up in unit 1's exam?

Reply 28

does anyone knows how do we use the calibration curve in the experiments and what do they mean by it?

Reply 29

::mellOddy::

5

Calibration curve is related to calorimeter in the cell membrane permeability experiment. say the calorimeter is set on "absorbance", it will measure the amount of light absorbed by a certain solution. A graph with a slope, showing how the absorbance changes with concentration of solution, is known as the calibration curve.

Original post by IGCSEsurvivor

does anyone knows how do we use the calibration curve in the experiments and what do they mean by it?

Reply 30

it s also used in the vitamin c experiment as well right?

Original post by ::mellOddy::

Calibration curve is related to calorimeter in the cell membrane permeability experiment. say the calorimeter is set on "absorbance", it will measure the amount of light absorbed by a certain solution. A graph with a slope, showing how the absorbance changes with concentration of solution, is known as the calibration curve.

Reply 31

::mellOddy::

5

yes, it is

Original post by IGCSEsurvivor

it s also used in the vitamin c experiment as well right?

Reply 32

E.143.G

8

Does anyone have any predictions?

Come on guys make this thread active!!!

Reply 33

Original post by ::melloddy::

yes, it is

thank you so much

Reply 34

guys my predictions for the upcomming paper are...
daphnia practical based question.
proteins based question
CVD--> HYPERTENSION BASED QUES..
DNA and mutations
i revised some papers from 2015..so maybe these predictions will come.BE IN TOUCH

Reply 35

Original post by Kevin.US

guys my predictions for the upcomming paper are...
daphnia practical based question.
proteins based question
CVD--> HYPERTENSION BASED QUES..
DNA and mutations
i revised some papers from 2015..so maybe these predictions will come.BE IN TOUCH

hope you are right, because if then we are 'hopefully' safe from another paper that might be like the chemistry one. I just hope it will be easy

(edited 5 years ago)

Reply 36