Qualification > Sciences

Edexcel BIOLOGY Doubts!!!!

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Blizz_rb93:
Here's a question I got on Beetroot...
This question is from May/June 2009

Question 1. a) iii)
The dependent variable in this experiment is the degree of redness. Describe how the degree of redness could be measured.

Uchia:
use a colorimeter
use a pipetter to measure a certain amount of water usually a 1 cm cube
mark the absorbance as 0 to the water
calculate the absorbance of the dye by the solution

Blizz_rb93:

--- Quote from: damlaj on May 10, 2010, 09:14:19 pm ---use a colorimeter
use a pipetter to measure a certain amount of water usually a 1 cm cube
mark the absorbance as 0 to the water
calculate the absorbance of the dye by the solution

--- End quote ---
thank you man! :) rep for u
i cant wait for tomorrow!! tomorrow is the unit 3 external lol

ksitna:

--- Quote from: Psyclax on May 10, 2010, 09:19:58 pm ---thank you man! :) rep for u
i cant wait for tomorrow!! tomorrow is the unit 3 external lol

--- End quote ---

u cant wait???? dude im freaking out!!! :o

Blizz_rb93:

--- Quote from: ksitna on May 10, 2010, 09:34:56 pm ---u cant wait???? dude im freaking out!!! :o

--- End quote ---
lol yeah i wanna do good!! ive been studying so hard and i feel like im ready to ace that exam :D besides 20 minutes left for it to be tomorrow :p
so yeah i wanna finish with this and get it over with

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