Biology EOC Review Packet

Name: __________________________

BIOLOGY EOC REVIEW PACKET

Scientific Method
1. Define the following:
a. Independent Variable: the variable that I change in the experiment

b. Dependent Variable: the variable that I am measuring (it depends on the independent variable)

c. Control Variable: variable that stay the same

d. Controlled experiment: an experiment in which only one variable is changed at a time

e. Hypothesis: an educated guess (If…, then…)

2. You have measured the rate at which a fish breaths at various temperatures by counting the rate at which its gills open. The data table is shown below. Create a line graph depicting the results.

Breathing Rate (breaths/minute)
Temperature (°C)
19
5
25
10
30
20
34
30
38
35

a. What is the independent variable? Explain why.
Temperature, it is the variable that is being changed

b. The dependent variable? Explain why.
Breathing rate, it is the variable that is being measured and it depends on the temperature

c. What happens to breathing rate with increase in temperature?
Breathing rate increases

d. Identify at least 3 control variables in this experiment.
Same tank, same fish, same pH of water, same time of day

e. What do you think would happen if you raised the temperature even more? Why would it be a bad idea to do this?
The breathing rate would increase even more, but if the temperature gets too hot the fish could die.

3. An experiment was performed to determine how much fertilizer was needed to produce the most pumpkins on the vine. The results are shown below.

Pumpkin A
Pumpkin B
Pumpkin C
Type of pumpkin seed
Jack-o-Lantern
Jack-o-Lantern
Jack-o-Lantern
Amount of water given daily (mL)
29.5
29.5
29.5
Amount of sunlight full sunlight full sunlight full sunlight
Temperature (oC)
23.9
23.9
23.9
Amount of fertilizer given (g)
0
200
300
Type of soil organic Organic
Organic
Day the seeds were