Here, I have drawn human cheek cells. I used x600 total magniciation as this was the magnification which provided the best view of the cells. For my biological drawing I used a pencil, and followed the rules for biological drawing. Clean unbroken lines, I included a title with total magnification, I used ruled lines for the labels and the scale bar. I did not shade, I used stippling to show that the cell nucleus was darker.  I also made sure to use the space provided, and only drew what i could see. 

In this lab practical, we had to prepare micrscope slides using our own cheek cells, and stained them. I viewed these under x600 total magnficiation. I worked out toal magnficiation as this is the ocular lense x objective lense. The occular lense is always x15, and i viewed this under objective x40. Therefore, 15x40 = x600. 

Here, is a photograph of some onion cells I took. The ruler is the eyepeice graticule. I wanted to measure the length of the cell marked along C-D. It is about 26 ocular units long. I was using total magnficiation of x600, so 1 ocular unit is 2.5um. 26x2.5= 65um. 

This is how I meausred the cell length to be 65um.