Edexcel AS Biology Unit 3 9th May 2016 Official Thread

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Why does it seem like no one over here is giving the Edexcel Biology AS Unit 3 on the 9th of May?? I need someone to discuss with! I can see you, stop hiding. Let's ace this **** together!

Unit 3?

yeessss

Original post by Ali 1265

hello guys when are you doing ur unit 3 bio tomorrow ??

12pm from oman

Reply 83

Hiyoriiki

Original post by pondsteps

ok thanks... btw have u solved 2015 june. i have a q on the implication part.. in the enviromental implication i wrote plastics are nonbiodegrable so they cause land fill as one of the implications whyis that wrong?? i got it from p6

You usually have to state implications from scientific report.
Otherwise that is a valid implication.

Reply 84

alevels2k17

Original post by Hiyoriiki

You usually have to state implications from scientific report.
Otherwise that is a valid implication.

yeah thats written in the report... plastic is mentioned

Reply 85

Misuuzu

Hi. I was wondering which experiments we need to cover for the exam. I've studied totipotency and plant tissue cultures, strength of plant fibres and effect of garlic and mint on bacterial growth. Do we also need things like effect of temperature on membrane permeability, investigating factors affecting initial rate of reaction, effect of caffeine on Daphnia heart rate and effect of storage temperature on the vitamin C content of fruits? I thought they were part of Unit 1 and so haven't touched them. My exam's in 7 hours and I'm freaking out. Somebody please help.

(edited 7 years ago)

Yea u need them all!

How do i understand which data of a graph should be in which axis?i become really confused everytime thanks

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Reply 89

Loody Nagy

Hey there!
My exam is in just a few hourss!
I wanted to ask how to calculate the percentage mean?
Please give me an example as well..

Reply 90

Komol

Use this formula (max mean-minimum mean÷original mean)×100 the ans you get will be the percentage but in this case you should need to know the original mean which will be given in the question

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Reply 91

Komol

Original post by Loody Nagy

Hey there!
My exam is in just a few hourss!
I wanted to ask how to calculate the percentage mean?
Please give me an example as well..

Reply 92

A-Level Student-

My exam's at 1pm and I'm freaking out😩 I have a feeling the experiment will either be Daphnia, vitamin C, mitosis or totipotency

Reply 93

A-Level Student-

How do we calculate the magnification? Also, how do we know whether the Bibliography is reliable or not?

Reply 94

Nethmioysters

Original post by Komol

How do i understand which data of a graph should be in which axis?i become really confused everytime thanks

Posted from TSR Mobile

The independant variable is always in the x-axis and the dependant is always in the y axis. For eg in the vitamin C experiment the volume of juice needed to decolourise DCPIP depends on the temperature. therefore temperature becomes the independant variable and the volume of juice required to decolourise DCPIP becomes the dependant variable (as it is dependant on the temperature). hope this helps!