Biology EOC Review Packet

Only available on StudyMode
  • Download(s) : 529
  • Published : April 6, 2014
Open Document
Text Preview
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 planted
7/8/2007
7/8/2007
7/8/2007
Number of pumpkins that the vine produced.
3
6
2

a. What is the problem?
How much fertilizer is needed to produce the most pumpkins on the vine.

b. What is the independent variable?
Amount of fertilizer

c. What is the dependant variable?
Number of pumpkins that the vine produced

d. Identify at least 3 control variables in this experiment. Amount of water, amount of sunlight, temperature, type of soil, day the seeds were planted

e. How much fertilizer would you use to grow the most pumpkins? 200g of fertilizer

4. A test was conducted to determine the highest possible soda geyser when placing Mentos into the soda. The following data was collected:

Soda A
Soda B
Soda C
Soda D
Type of Diet soda
Diet Coke
Diet Coke
Diet Coke
Diet Coke
Amount of soda in the container (L)
2
2
2
2
Temperature of surroundings (oC)
24
24
24
24
Temperature of beverage (oC)
23.9
23.9
23.9
23.9
Amount of mentos given (g)
0
3
6
9
Day the mentos were dropped
7/8/2007
7/8/2007
7/8/2007
7/8/2007
Estimated height of the soda geyser (cm).
0
250
300
300

a. What is the problem in the above experiment?
How many Mentos will it take to make the highest Coke geyser.

b. What is the independent variable?
Amount of Mentos given

c. What is the dependant variable?
Estimated height of soda geyser

d. Identify at least 3 control variables in this experiment. Type of soda, amount of soda in bottle, temperature of surrounding, temperature of soda, same day

e. Using the information above, would you need to drop 12 mentos into the diet soda? Explain why or why not. No, the height for 6g of Menots is the same as 9g of Menots

Chapter 2 – The Chemistry of Life
5. Fill in chart below:
Organic Molecule:
Contains which of the following:
C, H, O, N, P
Made up of:
Function
Examples
Carbohydrates
C, H, O
Sugars...
tracking img