Final Practice Flashcards
(40 cards)
My neighbor Carl wanted to increase the number of different bird species he could see from his house and thought that adding a bird feeder with feed would help. Carl put up a feeder outside of his window WITHOUT feed in it. For two weeks, Carl counted the number of different bird species that he could see from outside his window and identified 5 different species. After the two weeks had ended, Carl put up a bird feeder with seed and identified 8 different bird species over a two week period.
What is the hypothesis?
That adding a bird feeder WITH seed will increase the number of different bird species Carl can see from his house.
My neighbor Carl wanted to increase the number of different bird species he could see from his house and thought that adding a bird feeder with feed would help. Carl put up a feeder outside of his window WITHOUT feed in it. For two weeks, Carl counted the number of different bird species that he could see from outside his window and identified 5 different species. After the two weeks had ended, Carl put up a bird feeder with seed and identified 8 different bird species over a two week period.
What is the control?
The bird feeder without feed
My neighbor Carl wanted to increase the number of different bird species he could see from his house and thought that adding a bird feeder with feed would help. Carl put up a feeder outside of his window WITHOUT feed in it. For two weeks, Carl counted the number of different bird species that he could see from outside his window and identified 5 different species. After the two weeks had ended, Carl put up a bird feeder with seed and identified 8 different bird species over a two week period.
What is the Independent Variable?
The presence of a bird feeder with/without feed.
My neighbor Carl wanted to increase the number of different bird species he could see from his house and thought that adding a bird feeder with feed would help. Carl put up a feeder outside of his window WITHOUT feed in it. For two weeks, Carl counted the number of different bird species that he could see from outside his window and identified 5 different species. After the two weeks had ended, Carl put up a bird feeder with seed and identified 8 different bird species over a two week period.
What is the Dependent Variable?
The number of different bird species Carl can see from his house.
My neighbor Carl wanted to increase the number of different bird species he could see from his house and thought that adding a bird feeder with feed would help. Carl put up a feeder outside of his window WITHOUT feed in it. For two weeks, Carl counted the number of different bird species that he could see from outside his window and identified 5 different species. After the two weeks had ended, Carl put up a bird feeder with seed and identified 8 different bird species over a two week period.
What is the first step in the scientific method?
Observe
What is the magnification of the ocular within the compound microscopes used in the lab?
10x
As magnification increases, field of view:
decreases
What is the first objective that should be used when starting to examine a specimen?
4x
If I was using a compound microscope with a 5x ocular and a scanning objective (4x), what is the total magnification that the specimen is being viewed under?
20x
What part of the microscope can be used to adjust the amount of light that reaches the slide where the specimen is found?
Diaphragm
After centering and focusing the specimen at the scanning objective, what should my next move be to view the specimen closer?
Low power objective (10x)
What would happen to a potato that is placed in an isotonic solution?
Nothing
What would happen to a potato that is placed in a hypertonic solution?
Shrink
Why does a potato placed in a hypertonic solution shrink?
Since the salt content of the water is more than the salt content of the potato, the water moves out of the potato and into the surrounding solution until an equilibrium is reached.
Diffusion states that a substance will move from a __________ concentration to a __________ concentration without the use of energy.
Higher, Lower
Explain the reason why the corn starch solution within the dialysis tubing was able to turn black/purple when it was placed in the Iodine solution
The iodine molecules are small enough to move through the tubing and are able to diffuse into the cornstarch. The cornstarch molecules are too big to move through the tubing, so it’s unable to diffuse out into the water. So, the cornstarch inside the tubing turns black, while the water outside the tubing remains the same color.
Describe some of the principles/topics in lab that you have learned the most from and some that you have learned the least from
Most
- —Cell construction from viewing things with microscope
- —-How to operate microscope
- —-Dialysis tubing experiment was a nice visualization of osmosis
- —-Diffusion of spraying air freshener in room
Least
—–The experiment where we placed the elodea leaf in the water under the funnel
Write the overall equation for aerobic respiration in the space below
C6-H12-O6 —–> CO2-H2O-ATP
What is the relationship between photosynthesis and aerobic respiration?
Aerobic respiration creates CO2 & Water as a byproduct. Photosynthesis uses CO2 & Water to create O2 & Sugars, which is the fuel for aerobic respiration.
How many NET ATP molecules are produced in aerobic respiration for 1 molecule of glucose? How many of those are produced in the krebs cycle?
36 Net ATP Produced
2 Produced in Krebs cycle
What is the final electron acceptor in aerobic respiration?
Oxygen accepts the electrons at the end of the Electron Transfer Phosphorylation & combines with hydrogen to become water
What is 1 difference between aerobic respiration and anaerobic respiration?
During anaerobic respiration, the final electron acceptor is an organic molecule, as opposed to O2. It occurs in cytoplasm, so the entire net yield of ATP is only that which is produced by glycolysis (~2 ATP)
What gas, which is formed as a result of alcoholic fermentation, causes bread to rise?
CO2
If you were starting to run a 6 minute mile for gym class (running pretty quickly), within the first 50 yards, would your cells be undergoing aerobic respiration or lactic acid fermentation (anaerobic respiration)? Why?
Aerobic. There is plenty of O2 in your bloodstream to support it.
