Bio paper 6 doubt Help please

[Ahmed Alaa El-shamy]

BIOLOGY Can someone help me please
There is a question in OCT/NOV 2005 Paper 6
Suggest how you would observe the yeast cells and how you would estimate their total population in the flask?
i looked it up in the marking scheme but still i don't understand the answer :'(

 

[thementor]

Dude this is an IGCSE question, why did u post it in the olevels thread.....anyways the answer to your question:
Method:
Take a clean microscope slide and place the sample on it.....Stain the sample so that the yeast cells can be viewed easily.Place the slide on the stage of a microscope. Hold the slide in place by using clips....Adjust the amount of light coming through the mirror.....Adjust the magnification until the image is clearly visible through the eyepiece.Count the number of cells on slide. .Make sure to repeat the experiment and take the samples at equal time intervals.
This is the outine of the answer...........They ahve just given the main points in the marking scheme on which credit will be awarded.