Ia - Onion & Ox Eye Cell

Joanne Chan 12C

Joanne Chan 12C

Size of Allium cepa cells and Ovibos moschatus Oculi cells: Data collection and processing

Raw data

Table 1: Longest length recorded of Allium cepa cells and Ovibos moschatus Oculi cells Length of Allium cepa cells/ m - ±5.0 | Diameter of Ovibos moschatus Oculi cells/ m - ±5.0 | 330.0 | 25.0 | 360.0 | 30.0 | 320.0 | 30.0 | 280.0 | 40.0 | 300.0 | 40.0 | 350.0 | 30.0 | 300.0 | 30.0 | 290.0 | 30.0 | 420.0 | 20.0 | 280.0 | 40.0 | 310.0 | 20.0 | 320.0 | 30.0 | 180.0 | 20.0 | 250.0 | 20.0 | 150.0 | 30.0 |

Observations:

The appearance of the Allium cepa cells through the microscope was more of a regular, rectangular shape in brown colour. The colour of the cell was due to the iodine solution used to stain. As the size of the Allium cepa cells was bigger, the nucleus and cell wall of the cells could also be spotted through the microscope.
On the other hand, the cells of Ovibos moschatus Oculi were in an irregular shape with much smaller size. Thus, the nucleus of the cell could not be spotted. The Ovibos moschatus Oculi cell was in blue colour because of the methylene blue added.

Processed data

Table 2: Mean, median, mode and standard deviation of Allium cepa cells and Ovibos moschatus Oculi cells | Allium cepa cells | Ovibos moschatus Oculi cells | Mean / m | 296.0 | 29.0 | Median / m | 300.0 | 30.0 | Mode / m | 320.0 | 30.0 | Standard deviation | 66.7 | 7.1 | Formula used for calculating standard deviation
Allium cepa cells:
=√ (61220/14)
=66.7(1d.p.)
Ovibos moschatus Oculi cells:
=√ (710/14)
=7.1(1d.p.)
Formula used for calculating standard deviation
Allium cepa cells:
=√ (61220/14)
=66.7(1d.p.)
Ovibos moschatus Oculi cells:
=√ (710/14)
=7.1(1d.p.)

The data from table 1 showed all 15 different samples of Allium cepa cells and Ovibos moschatus Oculi cells with an uncertainty of ±5m. The average of these data are calculated and recorded in table 2, the