Good Procedure to Follow when Conducting an Experiment
Good Procedure to Follow when Conducting an Experiment
A. Experiment 1: Developing a Hypothesis
Interpret the Results
1. The cytoplasm in the cut off foot got the information it needed to rebuild an entire
Acetabularia cell from the nucleus. The nucleus contains all of the DNA (genetic information) and can therefore control all other functions of the cell. It has ability to control growth and reproduction of a new cell based on the information stored in the nucleus. The cell will not change because the information in the nucleus is still there to reproduce another new cell.
2. In the cell’s foot, the function of the nucleus is to control the reproduction of a new cell
and to maintain and use the same genetic information as the first cell.
B. Experiment 2: Testing the Hypothesis
Interpret the Results
1. Yes, the results of Experiment 2 support our working hypothesis, because a new cell
identical to the first cell was created. This is because of the nucleus containing the same genetic information which allows a new identical cell to be created just from the stalk. It is the nucleus that controls the functions of the cell and allowed a new cap and foot to be created using the same DNA as the first.
2. The cytoplasm in the stalk got the information it needed to rebuild an entire cell from the
information contained in the nucleus.
3. When moved to a new location, it is obvious that the nucleus still performs the same
function as it regularly does-controls the actions of other functions in cell. It contains the same genetic information as in the first location and continues to regulate cell activity (growth/reproduction). The chromosomes (DNA) do not change and the genetic information is still the same.
4. To perform all it’s life functions, the cell gets its information from the nucleus.
C. Experiment 3: Testing the Hypothesis Another Way
Predict the Results
Analyze
1. A) Yes, this result supports my original hypothesis because a new, identical cell was
created just using the information from the nucleus because of the identical DNA.
B) I can draw the conclusion that the genetic information remains identical and will therefore create the same cell as in the first picture despite the location of injection (and in what kind of cell).
C) The final conclusion I can draw at...