# Biology EOC Review Packet Answer Key

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Biology EOC Review Packet Answer Key

I tried the information about Biology EOC review packet answer key and I found the information from some online resources and one of them is from wobiology.com as you can access through this: https://wobiology.com/Bio%201H/Bio%20EOC%20Review%20My%20%20Answers.doc.

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

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 & starches Main source of energy for living things Structural support for plants Glucose Fructose Glycogen Lipids C, H Fatty acid & glycerol Store energy for living things Compose bi-layer in all cell membranes Leaves translucent spots on paper  Steroids = chemical messengers Fats Oils Waxes Proteins C, H, O, N Amino Acids Regulate cell processes. Form bones & muscle. Transport substances in & out of cells. Fight off disease. (Immune System) Enzymes Nucleic Acids C, H, O, N, P Nucleotides Stores genetic material DNA RNA

6. What is the function of an enzyme?
Acts as a biological catalyst, speeds up the rate of a chemical reaction

7. How do temperature and pH affect enzymes?
Most enzymes work best at body temperature, higher temps will cause the enzyme to no longer     work properly

8. Why is water important to living things?
Make up a lot of living things, universal solvent (dissolves many things)

9. Water is POLAR (which mean it is + on one end and – on the other).

10. Define Surface Tension:
Attraction between water molecules which allows insects and other objects to float a top the water

11. Acids have pH BELOW 7

12. Bases have pH ABOVE 7

13. Neutral solutions have pH of 7

Chapter 7 – Cell Structure & Function (including Diffusion and Osmosis)

14. Define the following:

a. Lipid bilayer – double layer of lipids that make up a cell membrane
b. Protein Channels – help move bigger molecules through the cell membrane
c. Carbohydrates – check ID of substances entering the cell

15. List the function of the following organelles:

 Organelle Function Nucleus Controls the functions of the cell Ribosomes Make proteins Cell membrane Regulate what enters and leaves the cell Cell wall Provides protection and support for plant cells Mitochondria Creates energy for the cell by breaking down sugar Vacuoles Stores water, sugar, and other molecules for the cell Lysosome Cleans up waste in the cell Golgi apparatus Sorts and packages molecules for transport around the cell Chloroplast Creates energy for plant cells by converting sunlight into usable energy Endoplasmic reticulum Make components (parts) for the cell

If you want to see more answer keys for this, you can access wobiology.com through this: https://wobiology.com/Bio%201H/Bio%20EOC%20Review%20My%20%20Answers.doc.